Folding ladder stand

Abstract

The utility model aims to provide a folding ladder stand which is used for being installed on a water tank and comprises a ladder main body and a folding assembly, the top end of the ladder main body is rotatably connected with the top of the water tank, the folding assembly comprises two long arms and two short arms, one ends of the two long arms are rotatably connected with the bottom end of the ladder main body, and the two long arms are located on the two sides of the ladder main body respectively. One ends of the two short arms are rotationally connected with the bottom of the water tank, the other ends of the two short arms are rotationally connected with the other ends of the two long arms respectively, and the length of the long arms is larger than that of the short arms; the minimum distance between one end of the short arm connected to the water tank and one end of the long arm connected to the ladder main body is equal to the length difference between the long arm and the short arm. Therefore, under the matching action of the ladder main body, the long arm and the short arm, the folding ladder stand can be folded so as to be convenient to transport, and space occupation is avoided when the folding ladder stand is not used.

Description

Technical Field

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

[0002] In industrial production, large water tanks are common infrastructure, widely used in many industries such as chemical, power, and food processing. They are used to store large quantities of liquid raw materials and finished products, or as water storage equipment for cooling, fire protection, and other systems. To ensure the normal operation and service life of the water tanks, regular maintenance, inspection, and cleaning are essential.

[0003] To facilitate workers' access to the top of the water tank for operations, ladders are typically installed. Currently, most existing ladders are fixed in place, either welded directly or secured to the outer wall of the water tank using bolts or other methods.

[0004] However, such fixed-installation ladders have many drawbacks. On the one hand, in some industrial sites with limited space, fixed ladders occupy a significant amount of space, potentially obstructing the installation and movement of surrounding equipment and the passage of personnel, thus reducing the space utilization rate. On the other hand, fixed-installation ladders are suspended on the outer wall of the water tank, which is not conducive to transportation from the production site to the installation site. In view of this, in order to solve the above-mentioned shortcomings, the folding ladder of this application is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a foldable ladder that is easy to transport and saves space.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A folding ladder for mounting on a water tank includes:

[0008] A ladder body, the top of which is rotatably connected to the top of the water tank; and

[0009] The folding assembly includes two long arms and two short arms. One end of each of the two long arms is rotatably connected to the bottom of the ladder body, and the two long arms are respectively located on both sides of the ladder body. One end of each of the two short arms is rotatably connected to the bottom of the water tank, and the other end of each of the two short arms is rotatably connected to the other end of each of the two long arms. The length of the long arms is greater than the length of the short arms. When the ladder body is vertically close to the water tank, the minimum distance between the end of the short arm connected to the water tank and the end of the long arm connected to the ladder body is equal to the difference between the lengths of the long arms and the short arms.

[0010] Optionally, the ladder body is provided with a stop block, which blocks the long arm when the ladder body approaches the water tank.

[0011] Optionally, two stops are provided, with the two stops located on opposite sides of the ladder body.

[0012] Optionally, the folding assembly further includes a locking member disposed on one of the short arms, the locking member being used to lock or release the adjacent long arms.

[0013] Optionally, the locking member includes a pin and an elastic member. The pin passes through the short arm, and the elastic member abuts against the pin and the short arm respectively. The elastic member is used to push the pin so that the pin passes through the long arm.

[0014] Optionally, the locking component further includes a locking ring, a sliding hole is provided on the short arm, a through hole is provided on the inner bottom wall of the sliding hole, the locking ring is screwed into the sliding hole, the through pin passes through the sliding hole and the through hole in sequence, the elastic element is located in the sliding hole, and the elastic element abuts against the locking ring.

[0015] Optionally, the elastic element is a spring.

[0016] Optionally, the long arm has two locking holes, and the elastic element is used to push the pin so that the pin passes through one of the locking holes, so that the ladder body remains close to or away from the water tank.

[0017] Optionally, the ladder body includes two side plates and several ladder rods. The two side plates are arranged in parallel, and the two ends of each ladder rod are respectively connected to the two side plates. Any two adjacent ladder rods are equidistantly distributed.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This utility model discloses a folding ladder for installation on a water tank. It includes a ladder body and a folding assembly. The top of the ladder body is rotatably connected to the top of the water tank. The folding assembly includes two long arms and two short arms. One end of each of the two long arms is rotatably connected to the bottom of the ladder body, and the two long arms are located on opposite sides of the ladder body. One end of each of the two short arms is rotatably connected to the bottom of the water tank, and the other end of each short arm is rotatably connected to the other end of each of the two long arms. The length of the long arms is greater than the length of the short arms. When the ladder body is vertically close to the water tank, the minimum distance between the end of the short arm connected to the water tank and the end of the long arm connected to the ladder body is equal to the difference in length between the long and short arms. Thus, through the coordinated action of the ladder body, long arms, and short arms, the folding ladder can be folded for easy transportation and avoids occupying space when not in use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the folded state of a folding ladder according to one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a folding ladder in its open state according to one embodiment of the present invention;

[0023] Figure 3 for Figure 2 A side view of the folding ladder in its open state;

[0024] Figure 4 This is a cross-sectional view of a locking member according to one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Folding ladder; 100. Ladder body; 200. Folding assembly; 210. Long arm; 220. Short arm; 300. Stop; 230. Locking element; 231. Through pin; 232. Elastic element; 233. Locking ring; 221. Sliding hole; 222. Through hole; 211. Locking hole; 110. Side plate; 120. Ladder bar. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0028] like Figures 1 to 3As shown, a folding ladder 10 is used for installation on a water tank. It includes a ladder body 100 and a folding assembly 200. The top of the ladder body 100 is rotatably connected to the top of the water tank. The folding assembly 200 includes two long arms 210 and two short arms 220. One end of each of the two long arms 210 is rotatably connected to the bottom of the ladder body 100, and the two long arms 210 are respectively located on both sides of the ladder body 100. One end of each of the two short arms 220 is rotatably connected to the bottom of the water tank, and the other end of each of the two short arms 220 is rotatably connected to the other end of each of the two long arms 210. The length of the long arm 210 is greater than the length of the short arm 220. When the ladder body 100 is vertically close to the water tank, the distance between the end of the short arm 220 connected to the water tank and the end of the long arm 210 connected to the ladder body 100 is equal to the difference in length between the long arm 210 and the short arm 220.

[0029] It should be noted that the ladder body 100 is connected to the folding assembly 200 to achieve foldability relative to the water tank. Specifically, the top of the ladder body 100 is rotatably connected to the top of the water tank using a pin, one end of the short arm 220 is rotatably connected to the bottom of the water tank using a pin, and the other end of the short arm 220 is rotatably connected to the bottom of the long arm 210 using a pin. Thus, through the coordinated action of the long arm 210, the short arm 220, and the ladder body 100, the ladder body 100 can be folded up vertically against the outer wall of the water tank, and can also be opened up tilted away from the outer wall of the water tank. When the ladder body 100 is vertically close to the water tank, the distance between the end of the short arm 220 connected to the water tank and the end of the long arm 210 connected to the ladder body 100 is the shortest. This distance is also the difference between the long arm 210 and the short arm 220, ensuring that the ladder body 100 can be folded close to the water tank and that the bottom of the ladder body 100 can be tilted open away from the water tank. Thus, compared with the fixed ladders of the prior art, the folding ladder 10 of this application can be folded for easy transportation and avoids taking up space when not in use.

[0030] like Figures 1 to 3 As shown, in one embodiment, a stop 300 is provided on the ladder body 100 so that when the ladder body 100 approaches the water tank, the stop 300 blocks the long arm 210.

[0031] It should be noted that in order to ensure that the ladder body 100 is stably vertical when folded, that is, to prevent the ladder body 100 from getting too close to the water tank, a stop 300 is installed on the ladder body 100. When the ladder body 100 is in a vertical state, the stop 300 is used to approach the long arm 210.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, two stops 300 are provided, and the two stops 300 are located on both sides of the ladder body 100 respectively.

[0033] It should be noted that by setting two stops 300, the stability of the ladder body 100 in the folded state is improved by using the two stops 300 to abut against the two long arms 210 respectively. In one embodiment, both stops 300 are welded and fixed to the ladder body 100.

[0034] like Figure 1 As shown, in one embodiment, the folding assembly 200 further includes a locking member 230, which is disposed on one of the short arms 220 and is used to lock or release the adjacent long arms 210.

[0035] It should be noted that in order to keep the ladder body 100 stably in the folded or open state, a locking member 230 is installed on the short arm 220. The locking member 230 is used to lock the long arm 210. When the locking member 230 releases the long arm 210, the ladder body 100 can switch between the folded and open states.

[0036] like Figure 4 As shown, in one embodiment, the locking member 230 includes a through pin 231 and an elastic member 232. The through pin 231 passes through the short arm 220, and the elastic member 232 abuts against the through pin 231 and the short arm 220 respectively. The elastic member 232 is used to push the through pin 231 so that the through pin 231 passes through the long arm 210.

[0037] It should be noted that the pin 231 passes laterally through the short arm 220, and the elastic element 232 abuts against the pin 231 and the short arm 220 respectively. The elastic force of the elastic element 232 pushes the pin 231, so that one end of the pin 231 passes through the long arm 210 to lock the long arm 210.

[0038] like Figure 4 As shown, in one embodiment, the locking member 230 further includes a locking ring 233. A sliding hole 221 is provided on the short arm 220, and a through hole 222 is provided on the inner bottom wall of the sliding hole 221. The locking ring 233 is screwed into the sliding hole 221, and the through pin 231 passes through the sliding hole 221 and the through hole 222 in sequence. The elastic member 232 is located in the sliding hole 221 and abuts against the locking ring 233.

[0039] It should be noted that the short arm 220 has interconnected sliding holes 221 and through holes 222. The locking ring 233 is screwed onto the inner wall of the sliding hole 221. The through pin 231 passes through the sliding hole 221 and through hole 222 in sequence to pass through the long arm 210. The elastic element 232 abuts against the through pin 231 and the locking ring 233 respectively. Thus, when the elastic element 232 pushes the through pin 231, the through pin 231 passes through the long arm 210 and is locked. In one embodiment, the elastic element 232 is a spring.

[0040] like Figure 4As shown, in one embodiment, the long arm 210 has two locking holes 211, and the elastic member 232 is used to push the through pin 231 so that the through pin 231 passes through one of the locking holes 211, so that the ladder body 100 remains close to or away from the water tank.

[0041] It should be noted that the ladder body 100 is in a folded state when it is close to the water tank, and in an open state when it is far away from the water tank. Thus, by providing two locking holes 211 on the long arm 210, and allowing the pin 231 to pass through each hole, the ladder body 100 can be stably held in either the folded or open state.

[0042] like Figure 1 As shown, in one embodiment, the ladder body 100 includes two side plates 110 and a plurality of ladder rods 120. The two side plates 110 are arranged in parallel, and the two ends of each ladder rod 120 are respectively connected to the two side plates 110, and any two adjacent ladder rods 120 are equidistantly distributed.

[0043] It should be noted that the two side plates 110 are welded and fixed to several ladder rods 120 to form an integral ladder body 100 structure. For example, the side plates 110 are made of iron plates with a thickness of 10mm and a width of 50mm, and the ladder rods 120 are made of iron columns with a diameter of 35mm and welded and fixed.

[0044] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A folding ladder for mounting on a water tank, characterized in that include: The ladder body, the top of which is rotatably connected to the top of the water tank; and A folding assembly includes a locking member, two long arms, and two short arms. One end of each of the two long arms is rotatably connected to the bottom of the ladder body, and the two long arms are respectively located on both sides of the ladder body. One end of each of the two short arms is rotatably connected to the bottom of the water tank, and the other end of each of the two short arms is rotatably connected to the other end of each of the two long arms. The length of each long arm is greater than the length of each short arm. When the ladder body is vertically close to the water tank, the minimum distance between the end of the short arm connected to the water tank and the end of the long arm connected to the ladder body is equal to the difference between the lengths of the long arms and the short arms. The locking member is disposed on one of the short arms and is used to lock or release the adjacent long arms. The locking component includes a pin and an elastic element. The pin passes through the short arm, and the elastic element abuts against the pin and the short arm respectively. The elastic element is used to push the pin so that the pin passes through the long arm. The locking component also includes a locking ring. A sliding hole is provided on the short arm, and a through hole is provided on the inner bottom wall of the sliding hole. The locking ring is screwed into the sliding hole, and the through pin passes through the sliding hole and the through hole in sequence. The elastic element is located in the sliding hole and abuts against the locking ring.

2. The foldable ladder according to claim 1, wherein The ladder body is provided with a stop block, which blocks the long arm when the ladder body approaches the water tank.

3. The foldable ladder stand of claim 2, wherein, There are two stops, which are located on both sides of the ladder body.

4. The foldable ladder of claim 1, wherein, The elastic element is a spring.

5. The foldable ladder of claim 1, wherein, Two locking holes are provided on the long arm. The elastic element is used to push the pin so that the pin passes through one of the locking holes, so that the ladder body remains close to or away from the water tank.

6. The foldable ladder of claim 1, wherein, The ladder body includes two side plates and several ladder rods. The two side plates are arranged in parallel, and the two ends of each ladder rod are respectively connected to the two side plates. Any two adjacent ladder rods are equidistantly distributed.

Images