Safety ladder

Abstract

The utility model relates to the technical field of safety ladder, especially safety ladder, the safety ladder of the utility model, it includes support pole, pedal and locking assembly, pedal is hinged with support pole, and locking assembly includes locking sleeve and locking sleeve linear sliding connection's locking rod, one end of locking sleeve is hinged with support pole, and one end of locking rod is directly or indirectly connected with pedal, locking rod is provided with locking protrusion, locking sleeve is provided with locking protrusion sliding slot and the locking groove that communicates with locking protrusion sliding slot and is downward, and locking protrusion sets up in locking protrusion sliding slot, the utility model is small in overall thickness when folding state, is more space saving, is more safe and reliable when using state, and can change the state of safety ladder quickly, is convenient for using.

Description

Technical Field

[0001] This utility model relates to the field of safety ladder technology, and in particular to safety ladders. Background Technology

[0002] Traditional safety ladders consist of a support rod, steps, and a locking assembly. The steps are hinged to the support rod, and the locking assembly includes two screws. One end of each screw is hinged to the support rod and the step, respectively, while the other ends (both screws are coaxial) are connected to the threads of an adjusting sleeve (the threads must be appropriately matched to the screw threads). When the safety ladder changes from a folded to an unfolded state, the adjusting sleeve needs to be rotated to change the distance between the two screws. However, rotating the adjusting sleeve to adjust the distance between the two screws is slow and inconvenient, therefore the safety ladder will never reach its minimum angle between the support rod and the steps. Utility Model Content

[0003] One objective of this invention is to solve or alleviate the aforementioned technical problems.

[0004] The present invention employs a safety ladder comprising a support rod, a tread, and a locking assembly. The tread is hinged to the support rod, and the locking assembly comprises a locking sleeve and a locking rod linearly slidably connected to the locking sleeve. One end of the locking sleeve is hinged to the support rod, and one end of the locking rod is directly or indirectly connected to the tread. The locking rod is provided with a locking protrusion, and the locking sleeve is provided with a locking protrusion groove and a downwardly extending locking groove communicating with the locking protrusion groove. The locking protrusion is disposed within the locking protrusion groove.

[0005] The advantages of this invention are that the overall thickness is small and space-saving when folded, it is safe and reliable when in use, and the state of the safety ladder can be quickly changed, making it easy to use.

[0006] A further technical solution involves providing anti-loosening protrusions in the locking groove.

[0007] This technical solution can prevent the locking protrusion from sliding out of the locking groove during use, thus improving safety.

[0008] A further technical solution involves multiple locking grooves arranged along the locking protrusion groove.

[0009] This technical solution can adjust the angle between the pedal and the support rod according to the placement angle of the support rod, so that the pedal is roughly horizontal and easy to use.

[0010] A further technical solution includes a locking groove comprising a folding receiving section that is close to the support rod and extends beyond the locking groove in the direction of the locking protrusion slide groove, wherein the locking protrusion is located within the folding receiving section when the locking protrusion is in the obscured state.

[0011] A further technical solution also includes a linkage component; there are multiple pedals, and each pedal is hinged to the linkage component, so that the linkage component is parallel to the support rod, and one end of the locking rod is hinged to the linkage component.

[0012] This technical solution simplifies the structure and reduces costs.

[0013] A further technical solution includes an adjustment receiving section that is close to the linkage and extends beyond the locking groove in the direction of the locking protrusion slide groove.

[0014] This technical solution allows for the rapid deployment of the safety ladder and convenient adjustment of the step angle.

[0015] Further technical solutions also include guardrail components with connecting rods, support rods with guardrail connecting parts, and connecting rods and guardrail connecting parts being detachably and fixedly connected.

[0016] This technical solution can further enhance the safety of the safety elevator.

[0017] A further technical solution also includes a guardrail mounting component, wherein the guardrail connecting part is provided with a guardrail insertion hole and a guardrail mounting hole, and the connecting rod is provided with a connecting rod hole. The guardrail mounting component passes through the guardrail mounting hole and the connecting rod hole so that the connecting rod is detachably and fixedly connected to the guardrail connecting part.

[0018] A further technical solution involves hinged stabilizing components at the ends of the support rods; these stabilizing components include rotation limiting walls.

[0019] A further technical solution involves providing a stabilizing groove in the stabilizing component.

[0020] It can prevent the end of the support rod from slipping. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a safety ladder according to an embodiment of the present invention.

[0022] Figure 2 This is a front view schematic diagram of a safety ladder according to an embodiment of the present invention.

[0023] Figure 3 This is a side view of a safety ladder according to an embodiment of the present invention.

[0024] Figure 4 This is a three-dimensional exploded view of a safety ladder according to an embodiment of the present invention.

[0025] Figure 5 This is a perspective view of the guardrail component 5 according to an embodiment of the present utility model.

[0026] Figure 6This is a schematic diagram of detail DTL1; line LINE1 is a reference line that passes through the point on the locking groove 322 closest to the support rod 1 and is perpendicular to the locking protrusion slide groove 321.

[0027] Figure 7 This is a schematic diagram of DTL2 in detail two.

[0028] The accompanying drawings in the specification that best illustrate the technical features of this utility model are: Figure 1 .

[0029] Detail 1 DTL1; Detail 2 DTL2; Support rod 1; Stabilizer 11; Rotation limit wall 111; Stabilizer groove 112; Guardrail connection part 15; Guardrail insertion hole 151; Guardrail mounting hole 152; Crossbeam 19; Step 2; Anti-slip structure 21; Locking assembly 3; Locking rod 31; Locking protrusion 311; Locking sleeve 32; Locking protrusion slide groove 321; Locking groove 322; Folding receiving section 323; Adjustment receiving section 324; Anti-detachment protrusion 325; Linkage part 4; Guardrail part 5; Connecting rod 51; Connecting rod hole 511; Guardrail mounting part 512; Guardrail mounting nut 513. Detailed Implementation

[0030] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0031] As a specific embodiment, the safety ladder of this utility model includes a support rod 1, a footboard 2, and a locking assembly 3.

[0032] The pedal 2 is hinged to the support rod 1, for example, by means of a pin or bolt. It is easy to understand that the angle between the surface of the pedal 2 and the support rod 1 changes as the pedal 2 rotates relative to the support rod 1. The surface of the pedal 2 is provided with an anti-slip structure 21. For example, the pedal 2 has a circular hole, and a circular anti-slip element is inserted into the hole, with the top of the anti-slip element protruding from the surface of the pedal 2 to form the anti-slip structure 21. There are two support rods 1, and the two support rods 1 are connected by a crossbeam 19.

[0033] like Figure 6 As shown, the locking assembly 3 includes a locking sleeve 32 and a locking rod 31 that are linearly slidably connected to the locking sleeve 32. For example, the locking rod 31 is inserted into the locking sleeve 32 to make the locking rod 31 and the locking sleeve 32 linearly slidably connected. One end of the locking sleeve 32 is hinged to the support rod 1, and one end of the locking rod 31 is directly or indirectly connected to the pedal 2. For example, one end of the locking rod 31 is hinged to the pedal 2 through a hinge seat (not shown in the figure), so that one end of the locking rod 31 is directly connected to the pedal 2; one end of the locking rod 31 can also be indirectly connected to the pedal 2 through the linkage 4 described later.

[0034] The locking rod 31 is provided with a locking protrusion 311, and the locking sleeve 32 is provided with a locking protrusion groove 321 and a locking groove 322 that communicates with the locking protrusion groove 321 and faces downward. It is easy to understand that the opening of the locking groove 322 that communicates with the locking protrusion groove 321 faces upward. This upward orientation is not limited to vertical upward orientation; it simply means that there is an upward vector.

[0035] The locking protrusion 311 is located within the locking protrusion groove 321.

[0036] The working principle is as follows: the locking protrusion 311 moves within the locking groove 322, causing the angle between the support rod 1 and the step 2 to decrease until the step 2 can no longer rotate relative to the support rod 1. At this point, the safety ladder is in a folded state. The overall thickness of the safety ladder is relatively small at this time, saving space.

[0037] In use, the locking protrusion 311 is moved within the locking groove 322 until it enters the groove, increasing the angle between the support rod 1 and the step 2. At this point, the safety ladder is in its operational state (i.e., the deployed state). The support rod 1 is then placed against the operational position, and the user steps onto the step 2 one at a time to increase their height. During this process, the weight of the step 2 and the user causes the locking protrusion 311 of the locking rod 31 to tend to move downwards and closer to the support rod 1, thus maintaining the position of the step 2 and ensuring safety.

[0038] Furthermore, the safety ladder can be quickly changed from a folded state to a usable state without rotating the adjustment sleeve, making it easy to use.

[0039] As can be seen from the above, the safety ladder of this utility model has a small overall thickness when folded, which saves space, and is relatively safe and reliable when in use. It can also quickly change the state of the safety ladder, making it easy to use.

[0040] As one specific implementation method, the locking groove 322 is provided with an anti-loosening protrusion 325; such as Figure 6 As shown by line LINE1, line LINE1 is a reference line passing through the point on the locking groove 322 closest to the support rod 1 and perpendicular to the locking protrusion slide groove 321. The anti-detachment protrusion 325 is the portion extending beyond line LINE1. In this embodiment, when a person steps on the pedal 2, the weight of the pedal 2 and the person causes the locking protrusion 311 of the locking rod 31 to tend to move downward and closer to the support rod 1. During this process, even if the pedal 2 or the locking assembly 3 is shaken, causing the locking protrusion 311 to tend to disengage from the locking groove 322, the movement tendency of the locking protrusion 311 due to the weight of the pedal 2 and the person, as well as the obstruction of the anti-detachment protrusion 325, prevents the locking protrusion 311 from or makes it difficult to disengage from the locking groove 322. This prevents the locking protrusion 311 from sliding out of the locking groove 322 during use and improves safety.

[0041] As one specific implementation, there are multiple locking grooves 322, which are arranged along the locking protrusion slide groove 321. Typically, the multiple locking grooves 322 are arranged at equal intervals. By placing the locking protrusion 311 into different locking grooves 322, the angle between the pedal 2 and the support rod 1 can be adjusted according to the placement angle of the support rod 1 (such as when the support rod 1 is placed against a wall or the ground), so that the pedal 2 is approximately horizontal and easy to use.

[0042] As one specific implementation, the locking groove 322 includes a folding receiving section 323 that is close to the support rod 1 and extends beyond the locking groove 322 in the direction of the locking protrusion slide groove 321. In the blocked state, the locking protrusion 311 is located in the folding receiving section 323.

[0043] As one specific implementation, the safety ladder of this utility model embodiment further includes a linkage member 4; there are multiple pedals 2, and each of the multiple pedals 2 is hinged to the linkage member 4, so that the linkage member 4 is parallel to the support rod 1; one end of the locking rod 31 is hinged to the linkage member 4, thereby indirectly connecting one end of the locking rod 31 to the pedal 2. This implementation requires at least one locking assembly 3 to connect one end of the locking rod 31 to each pedal 2, eliminating the need to provide a corresponding locking assembly 3 for each pedal 2, thus simplifying the structure and reducing costs.

[0044] As one specific implementation, the locking groove 322 includes an adjustment receiving section 324 that is close to the linkage 4 and extends beyond the locking groove 322 in the direction of the locking protrusion slide groove 321. During the process of the safety ladder changing from the folded state to the unfolded state, the locking protrusion 311 will not get stuck in the locking groove 322 closest to the linkage 4; the locking rod 31 can be moved quickly first to make the locking protrusion 311 enter the adjustment receiving section 324, and then the locking protrusion 311 can be moved into different locking grooves 322 to adjust the angle of the step 2, thereby enabling the safety ladder to be unfolded quickly and the angle of the step 2 to be easily adjusted.

[0045] As one specific implementation, the safety ladder of this utility model further includes a guardrail 5 with a connecting rod 51, and a support rod 1 with a guardrail connecting part 15. The connecting rod 51 and the guardrail connecting part 15 are detachably fixedly connected. This implementation can further improve the safety of the safety ladder.

[0046] As one specific implementation, the safety ladder of this utility model embodiment also includes a guardrail mounting component 512. The guardrail connecting portion 15 is provided with a guardrail insertion hole 151 and a guardrail mounting hole 152. The connecting rod 51 is provided with a connecting rod hole 511. The guardrail mounting component 512 passes through the guardrail mounting hole 152 and the connecting rod hole 511, so that the connecting rod 51 is detachably and fixedly connected to the guardrail connecting portion 15. For example, the guardrail mounting component 512 is a bolt, which is screwed into the guardrail mounting nut 513 to further improve safety.

[0047] As one specific implementation, a stabilizing member 11 is hinged to the end of the support rod 1 (the top and / or bottom end of the support rod 1); the stabilizing member 11 includes a rotation limiting wall 111, which abuts against the end of the support rod 1 when the stabilizing member 11 is rotated to be perpendicular to the support rod 1, and abuts against the side wall of the support rod 1 when the stabilizing member 11 is rotated to be parallel to the support rod 1.

[0048] As one specific implementation, the stabilizing member 11 is provided with a stabilizing groove 112; the stabilizing groove 112 is placed on a protrusion or other surface on the ground to prevent the end of the support rod 1 from sliding. Of course, for specific applications, the stabilizing member 11 can also be fixed by means of screws passing through it.

[0049] The terms used in this invention, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are merely for distinction.

[0050] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0051] In this utility model, terms indicating direction or location such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, and below are used to indicate relative positions rather than absolute positions.

[0052] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that are present but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context; for example, regarding dimensional deviations, the specific context may include, but is not limited to, relevant standards for dimensional tolerances.

Claims

1. A safety ladder, comprising a support rod (1), a step (2), and a locking assembly (3); characterized in that The pedal (2) is hinged to the support rod (1). The locking assembly (3) includes a locking sleeve (32) and a locking rod (31) that are linearly slidably connected to the locking sleeve (32). One end of the locking sleeve (32) is hinged to the support rod (1), and one end of the locking rod (31) is directly or indirectly connected to the pedal (2). The locking rod (31) is provided with a locking protrusion (311), and the locking sleeve (32) is provided with a locking protrusion groove (321) and a locking groove (322) that communicates with the locking protrusion groove (321) and is downward. The locking protrusion (311) is located in the locking protrusion groove (321).

2. The safety ladder of claim 1, wherein, The locking groove (322) is provided with an anti-loosening protrusion (325).

3. The safety ladder according to claim 1, characterized in that, There are multiple locking grooves (322) and they are provided along the locking protrusion groove (321).

4. The safety ladder of claim 1, wherein, The locking groove (322) includes a folding receiving section (323) near the support rod (1) and extending beyond the locking groove (322) in the direction of the locking protrusion slide (321), wherein the locking protrusion (311) is located within the folding receiving section (323) in the obscured state.

5. The safety ladder of claim 1, wherein, It also includes a linkage (4); there are multiple pedals (2) and each pedal (2) is hinged to the linkage (4) so ​​that the linkage (4) is parallel to the support rod (1) and one end of the locking rod (31) is hinged to the linkage (4).

6. The safety ladder of claim 5, wherein, The locking groove (322) includes an adjustment receiving section (324) that is close to the linkage (4) and extends beyond the locking groove (322) in the direction of the locking protrusion slide (321).

7. The safety ladder of claim 1, wherein, It also includes a guardrail component (5) with a connecting rod (51), and a support rod (1) with a guardrail connecting part (15). The connecting rod (51) and the guardrail connecting part (15) are detachably fixedly connected.

8. The safety ladder according to claim 7, characterized in that, It also includes a guardrail mounting component (512), a guardrail connecting part (15) with a guardrail insertion hole (151) and a guardrail mounting hole (152), a connecting rod (51) with a connecting rod hole (511), and the guardrail mounting component (512) passes through the guardrail mounting hole (152) and the connecting rod hole (511) so that the connecting rod (51) is detachably fixedly connected to the guardrail connecting part (15).

9. The safety ladder according to claim 1, characterized in that, The end of the support rod (1) is hinged to a stabilizing member (11); the stabilizing member (11) includes a rotation limiting wall (111).

10. The safety ladder of claim 9, wherein, The stabilizing member (11) is provided with a stabilizing groove (112).

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