Safe scaling ladder device and mounting structure thereof

Abstract

The utility model relates to the technical field of industrial equipment and safety, and particularly discloses a safety scaling ladder device and a mounting structure thereof. The safety scaling ladder device is composed of a safety ladder, guardrails and connecting parts, the safety ladder comprises channel steel, contraction wheels, the guardrails and steps, and the guardrails are arranged in a surrounding mode to guarantee the safety of workers. In addition, the safety ladder is further provided with a contraction system which comprises a contraction seat and a steel cable, so that the safety ladder can be contracted after operation is completed, space is saved, and the safety ladder can be used as a guardrail. The matched installation structure comprises a floor base plate, an installation platform and a safety guardrail. The floor base plate is provided with the safety guardrail, an opening is formed in the middle of the floor base plate, and the floor base plate is connected with the safety ladder through the limiting frame and the rotating seat to provide stable support. The safe aerial ladder device and the mounting structure thereof have multiple advantages, a safe aerial work platform is provided, space is saved, multifunctionality is achieved, and the requirements of factory building production operation are met.

Description

Technical Field

[0001] The utility model relates to the field of industrial equipment and safety technology, in particular to a safety ladder device and an installation structure thereof. Background Art

[0002] Generally, in the field of metallurgy, there are factories for stacking scrap steel. A large amount of scrap iron is piled up in the factories. They come from various channels, including scrapped machinery, cars, ships, etc. Every day, many trucks loaded with scrap iron come to unload. During unloading, workers will operate the crane to lift the scrap iron blocks to the designated location. Generally, when the scrap iron is transported by crane in the factory, there will be command personnel, who usually need to use ladders or suspended work platforms for high-altitude operations. Traditional suspended ladders usually adopt fixed structures, which require manual handling, erection and fixing during installation. The operation process is time-consuming and labor-intensive, and there are certain safety hazards.

[0003] In addition, traditional hanging ladders need to be manually stored after use, which not only increases the labor intensity of operators, but also reduces construction efficiency. Especially in frequent use or emergency operations, the installation and disassembly efficiency of traditional ladders cannot meet actual needs.

[0004] A suspended staircase is disclosed in the patent "A hanging ladder for construction outside the floor window" (publication number CN209444258U, hereinafter referred to as prior art 1). The staircase in prior art 1 is constructed by inserting an angle iron ladder frame into a wall clamp, clamping the wall through the wall clamp, and hanging the angle iron ladder frame on the wall clamp. Workers stand on the ladder of the angle iron ladder frame to carry out construction. However, the connection method of the ladder in prior art 14 is not stable enough, and the weight it carries is large and easy to fall off. In addition, the hanging ladder in prior art 1 needs to be installed by yourself when in use. Since the ladder itself has a certain weight, it is also troublesome to install. Since the ladder itself has a certain weight, it is also relatively laborious to install, and installation accidents are prone to occur. And it needs to be manually stored after use, which is very inconvenient. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a safety ladder device and an installation structure thereof, so as to solve the problem that the hanging ladder in the prior art is relatively complicated to install and use and needs to be stored manually.

[0006] An embodiment of the utility model provides a safety ladder device, including a ladder body and a connecting part; the ladder body includes a safety ladder, and both sides of the safety ladder are provided with channel steels with openings facing outwards; the connecting part is arranged at one end of the safety ladder; the two sides of the other end of the safety ladder are respectively provided with a first retracting wheel and a second retracting wheel; the end of the safety ladder is provided with an I-beam; the two sides of the safety ladder are provided with a first guardrail and a second guardrail; the safety ladder is also provided with a third guardrail at the end away from the opening; the safety ladder is provided with a plurality of steps; the first guardrail, the second guardrail and the third guardrail surround the steps; the first guardrail and the second guardrail are respectively arranged on the channel steels on both sides of the safety ladder; the third guardrail is arranged on the I-beam at the end of the safety ladder; the width of the I-beam is greater than the width between the channel steels on both sides of the safety ladder; the first guardrail, the second guardrail and the third guardrail are all provided with a safety height.

[0007] In the second aspect, a mounting structure is provided, including a floor base plate and a mounting platform; including a safety ladder device as described above; a safety guardrail is provided on one side of the floor base plate; an opening is provided in the middle part of the safety guardrail; the mounting platform is arranged at a high place of the floor base plate and supported by the floor base plate; a first limit frame and a second limit frame are provided on both sides of the opening; a first retractable seat and a second retractable seat are provided on both sides of one end of the mounting platform; a first intermediate wheel and a second intermediate wheel are provided on both sides of the other end of the mounting platform; the floor base plate is provided with a first swivel seat and a second swivel seat on both sides outside the opening; both sides of one end of the safety ladder are connected to the first swivel seat and the second swivel seat respectively; the ladder body is arranged at a position between the first limit frame and the second limit frame.

[0008] Preferably, the connecting portion connects the ladder body to the floor base through connection with the first rotating seat and the second rotating seat.

[0009] Preferably, the first shrinking wheel and the second shrinking wheel are respectively arranged at two ends of the top of the I-beam.

[0010] Preferably, the first retractable seat and the second retractable seat are respectively connected to the first retractable wheel and the second retractable wheel through retractable steel cables; the retractable steel cables connecting the first retractable seat and the second retractable seat and the first retractable wheel and the second retractable wheel respectively pass through the first intermediate wheel and the second intermediate wheel.

[0011] Preferably, the first safety pile and the second safety pile are both provided with safety steel cables; the safety steel cables of the first safety pile and the second safety pile are respectively connected to the bottom of the first retracting wheel and the second retracting wheel.

[0012] Preferably, when the ladder body is folded, the angle between it and the floor base plate is 90°; when in use, the maximum angle between the ladder body and the floor base plate is 135°.

[0013] Preferably, the first shrinking wheel comprises a base and a rotating shaft; bearings are provided on both sides of the base; and the rotating shaft is installed through the bearings on both sides of the base.

[0014] Preferably, the rotating shaft is provided with a mounting groove; the rotating shaft is provided with a connecting wheel through the mounting groove; at least one steel cable groove is provided on the connecting wheel; and the retractable steel cable is arranged in the steel cable groove.

[0015] Preferably, the first contraction wheel, the second contraction wheel, the first intermediate wheel and the second intermediate wheel are arranged in the same manner.

[0016] The utility model provides a safety ladder device and its installation structure, which has the following beneficial effects:

[0017] The utility model can be mounted on the top (or working platform) of a truck or a truck head to complete a safe operation by installing the safety ladder device on the mounting structure. The utility model connects the retractable first and second retractable wheels with the first and second retractable seats through a retractable steel cable, so that the ladder body can be driven to rotate based on the floor base plate, so that it can move to a preset working position. The retractable steel cable is driven by the first and second retractable seats to fold or unfold the safety ladder, so that it can help workers complete the operation on the top of the truck or the truck head. When the operation is completed, the safety ladder can also be used as a part of the safety guardrail after folding. The effect of being used as an auxiliary tool for working on the top of the truck or the truck head and as a safety guardrail is achieved, and after folding, it does not occupy extra space on the aisle of the floor base plate. When in use, the safety ladder only needs to be put down, and after use, it only needs to be folded, and no manual installation and storage are required, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0019] Figure 1 It is a schematic diagram of the overall structure of a safety ladder device;

[0020] Figure 2 It is a schematic diagram of the top structure of a safety ladder device;

[0021] Figure 3 It is a schematic diagram of the front structure of a safety ladder device;

[0022] Figure 4 It is a schematic diagram of the structure of the first retracting wheel of a safety ladder device;

[0023] Figure 5 yes Figure 1 A partial enlarged view of the

[0024] Parts and numbers in the picture:

[0025] 110-safety ladder, 111-channel steel, 112-I-beam, 113-first guardrail, 114-second guardrail, 116-step, 117-connecting shaft;

[0026] 120-first retracting wheel, 121-base, 122-rotating shaft, 123-connecting wheel, 124-cable groove;

[0027] 130 - second retracting wheel;

[0028] 210-floor base plate, 211-safety guardrail, 212-first limiting frame, 213-second limiting frame, 214-first rotating seat;

[0029] 220-installation platform, 221-first retractable seat, 222-second retractable seat, 223-first intermediate wheel, 224-second intermediate wheel, 225-first safety pile, 226-second safety pile, 227-transmission shaft, 228-reduction motor;

[0030] 310-retraction cable;

[0031] 320-Safety cable. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0033] Example 1

[0034] See also Figure 1 , an embodiment of the utility model provides a safety ladder device, including a ladder body and a connecting part; the ladder body is used for workers to go up and down; the connecting part is used to connect with the following installation structure. The ladder body includes a safety ladder 110, and the safety ladder 110 is similar to the existing step ladder. Both sides of the safety ladder 110 are provided with channel steels 111 with openings facing outwards, and the channel steels 111 are fixedly provided on both sides of the safety ladder 110 by welding or bolts. The channel steels 111 all have openings, so that the openings of the channel steels 111 are set to face the outside, leaving a groove for the channel steels 111 to allow installation of other components.

[0035] The connecting part is provided at one end of the safety ladder 110; the first retracting wheel 120 and the second retracting wheel 130 are respectively provided on both sides of the other end of the safety ladder 110; the end of the safety ladder 110 is provided with an I-beam 112. The first guardrail 113 and the second guardrail 114 are provided on both sides of the safety ladder 110; the safety ladder 110 is also provided with a third guardrail at the end away from the opening; the safety ladder 110 is provided with a plurality of steps 116; the first guardrail 113, the second guardrail 114 and the third guardrail surround the steps 116.

[0036] First, a connection part is provided at one end of the safety ladder 110, which plays a role of stability and safety. It connects the safety ladder 110 to the building or the following installation structure, and plays a role of rotating the safety ladder 110, so that the safety ladder 110 can be lowered by rotation when in use, and reset by rotation when use is completed.

[0037] See also Figure 2 At the other end of the safety ladder 110, the designer sets two retracting wheels, namely a first retracting wheel 120 and a second retracting wheel 130. The function of the two retracting wheels is to facilitate the retraction and expansion of the safety ladder 110 when the safety ladder 110 is used. In this way, workers can adjust the length of the safety ladder 110 according to actual conditions to meet the needs of different heights. At the end of the safety ladder 110, the designer cleverly adds an I-beam 112. The presence of the I-beam 112 enhances the load-bearing capacity of the safety ladder 110.

[0038] See also Figure 2 In order to improve the protection performance of the safety ladder 110, a first guardrail 113 and a second guardrail 114 are respectively provided on both sides of the safety ladder 110. These two guardrails can effectively prevent workers from accidentally falling from both sides of the safety ladder 110 during use, thereby improving safety. At one end away from the opening, the safety ladder 110 is also provided with a third guardrail. This guardrail plays a role of supplementary protection and further ensures the safety of the workers. Generally, when in use, after the safety ladder 110 is lowered, the lowered end is connected to the top of the truck head to prevent workers from accidentally slipping on the step 116, and the third guardrail is added. The third guardrail can prevent workers from falling from the end of the safety ladder 110 when in use. Furthermore, the third guardrail can be selected to be fully closed, fully opened, or generally opened and half closed. The safety ladder 110 is provided with a plurality of steps 116. The design of these steps 116 enables workers to maintain stability when going up and down the safety ladder 110, so that they have a stable posture between them and do not slip on the safety ladder 110.

[0039] See also Figure 2The first guardrail 113, the second guardrail 114 and the third guardrail surround the step 116. This design not only ensures the stability of the step 116, but also increases the overall stability of the safety ladder 110. Figure 1 , the first guardrail 113 and the second guardrail 114 are respectively arranged on the channel steels 111 on both sides of the safety ladder 110; the third guardrail is arranged on the I-beam 112 at the end of the safety ladder 110; the width of the I-beam 112 is greater than the width between the channel steels 111 on both sides of the safety ladder 110; the first guardrail 113, the second guardrail 114 and the third guardrail are all provided with a safety height. The first guardrail 113 and the second guardrail 114 are respectively arranged on the channel steels 111 on both sides of the safety ladder 110, which play a good role in isolation and protection. In practical applications, these two layers of guardrails can effectively prevent workers from accidentally falling and ensure work safety.

[0040] Furthermore, the first guardrail 113 and the second guardrail 114 are basically in contact with the floor base plate 210 at one end close to the floor base plate 210 when they are folded. Since the safety ladder 110 needs to be folded when the work is completed, in order to be able to fold it completely, the first guardrail 113 and the second guardrail 114 are not completely set at one end close to the floor base plate 210. When the safety ladder 110 is put into use, a part of the safety ladder 110 is not protected. At this time, the first limit frame 212 and the second limit frame 213 are used to protect both sides of the safety ladder 110 respectively. In this way, when the safety ladder 110 is folded, the first guardrail 113 and the second guardrail 114 are basically in contact with the floor base plate 210 at one end close to the floor base plate 210, and the folding is basically completed. At this time, the safety ladder 100 can be used as a part of the safety guardrail 211.

[0041] Furthermore, the third guardrail is located on the I-beam 112 at the end of the safety ladder 110. Compared with the first guardrail 113 and the second guardrail 114, the third guardrail plays a more critical protective role. Furthermore, the width of the I-beam 112 is greater than the width between the channel steels 111 on both sides of the safety ladder 110. This design makes the guardrail more stable and reliable. In the design of these three layers of guardrails, safety height is an important consideration. The first guardrail 113, the second guardrail 114 and the third guardrail are all set with a safety height, which means that they have excellent performance in preventing accidental falls. At the same time, this design also complies with relevant safety regulations in my country and ensures the compliance of the facilities. This safety ladder 110 guardrail system has multi-level protection, which can effectively ensure the safety of workers in dangerous working environments.

[0042] Example 2

[0043] See also Figure 1An embodiment of the utility model provides an installation structure, including a floor base plate 210 and an installation platform 220; including a safety ladder device as described in the above embodiment; a safety guardrail 211 is provided on one side of the floor base plate 210; an opening is provided in the middle part of the safety guardrail 211; the installation platform 220 is arranged at a high place of the floor base plate 210 and is supported by the floor base plate 210.

[0044] See also Figure 3 , a safety guardrail 211 is provided on one side of the floor base plate 210. The floor base plate 210 itself is one of the layers of the building frame in the factory building, and it is provided with at least one layer, namely the second layer. However, there are generally multiple layers. Workers generally walk on the floor base plate 210 to perform work, and generally, guardrails are provided on both sides of the floor base plate 210. Generally, other working parts are also provided on the inner side, so a safety guardrail 211 is provided on at least one side of the outer side. A portion of the safety guardrail 211 is provided in an opening. Generally, the height of the mounting platform 220 is higher than the floor base plate 210, and it can be a floor base plate 210 of a higher layer, or it can be a mounting platform 220 fixed separately on the building frame. The mounting platform 220 is located higher, so that the retracting steel cable 310 can be more labor-saving when retracting.

[0045] See also Figure 1 and Figure 2 Preferably, a first limiting frame 212 and a second limiting frame 213 are respectively provided on both sides of the opening. A first shrinking seat 221 and a second shrinking seat 222 are respectively provided on both sides of one end of the mounting platform 220. A first intermediate wheel 223 and a second intermediate wheel 224 are respectively provided on both sides of the other end of the mounting platform 220.

[0046] See also Figure 2 Furthermore, the first shrinking seat 221 and the second shrinking seat 222 are connected in transmission via a transmission shaft 227, and a reduction motor 228 is provided on one side of the first shrinking seat 221, and the reduction motor 228 is connected in transmission with the first shrinking seat 221. Driven by the first shrinking seat 221, the first shrinking seat 221 and the second shrinking seat 222 simultaneously release or tighten the shrinking cable 310.

[0047] See also Figure 3The opening is provided so that after the safety ladder 110 is installed, there is a part connected to the safety ladder 110. The opening provided in the middle part of the safety guardrail 211 can facilitate the entry and exit of personnel, while also ensuring a good field of vision. Such a design not only meets the safety requirements, but also takes into account practicality. A first limiting frame 212 and a second limiting frame 213 are provided on both sides of the opening to prevent workers from accidentally falling from the floor base plate 210 when using it, thereby ensuring the safety of the workers. It also provides a handrail for support when workers use the safety ladder 110.

[0048] See also Figure 2 At the inner end of the mounting platform 220, a first retracting seat 221 and a second retracting seat 222 are respectively provided for retracting and releasing the retracting steel cable 310 described below. This design is intended to improve the adaptability and flexibility of the product, so that the user can adjust the retracting steel cable 310 according to actual needs. At the outer end of the mounting platform 220, a first intermediate wheel 223 and a second intermediate wheel 224 are provided. The purpose of designing these two sets of wheels is to assist the movement of the retracting steel cable 310, so that when the worker is operating, the retracting steel cable 310 can easily rotate the safety ladder 110 to the desired position. At the same time, the design of the first intermediate wheel 223 and the second intermediate wheel 224 also helps to reduce the friction of the safety steel cable 320 during movement, thereby extending the service life of the product.

[0049] See also Figure 1 and Figure 5 Furthermore, the floor base plate 210 is provided with a first rotating seat 214 and a second rotating seat on both sides of the outside of the opening; the first rotating seat 214 and the second rotating seat are both provided with bearings. The two sides of one end of the safety ladder 110 are respectively connected to the first rotating seat 214 and the second rotating seat; the main body of the cloud ladder is arranged between the first limiting frame 212 and the second limiting frame 213. The safety ladder 110 is rotatably connected with the first rotating seat 214 and the second rotating seat, and one end of the safety ladder 110 connected with the first rotating seat 214 and the second rotating seat is provided with a connecting shaft 117, and the first rotating seat 214 and the second rotating seat are sleeved with the connecting shaft 117, and the connecting shaft 117 is rotated by the cooperation with the first rotating seat 214 and the second rotating seat. When the retracting steel cable 310 is retracted, the safety ladder 110 is driven to be retracted; when the retracting steel cable 310 is released, the safety ladder 110 is rotated to the designated working position. The safety ladder 110 moves between the first limiting frame 212 and the second limiting frame 213 .

[0050] The connecting part connects the ladder body to the floor base plate 210 by connecting with the first rotating seat 214 and the second rotating seat. In fact, the ladder body is a part attached to the outside of the floor base plate 210. When in use, it is lowered by retracting the steel cable 310; when folded, it is used as a part of the guardrail. The first retracting wheel 120 and the second retracting wheel 130 are respectively arranged at the two ends of the top of the I-beam 112.

[0051] See also Figure 2 , the first retractable seat 221 and the second retractable seat 222 are connected to the first retractable wheel 120 and the second retractable wheel 130 respectively through the retractable steel cable 310; the retractable steel cables 310 respectively connected to the first retractable wheel 120 and the second retractable wheel 130 of the first retractable seat 221 and the second retractable seat 222 pass through the first intermediate wheel 223 and the second intermediate wheel 224. Wherein, the arrangement includes two steel cables, and the two ends of the two retractable steel cables 310 are respectively fixed on the first intermediate wheel 223 or the second intermediate wheel 224, the first retractable seat 221 or the second retractable seat 222. Wherein, the first retractable seat 221 and the second retractable seat 222 are passed through the first retractable wheel 120 and the second retractable wheel 130. The first retractable seat 221 and the second retractable seat 222 are started at the same time and begin to retract; by the rotation of the retractable steel cable 310 in the first retractable wheel 120 and the second retractable wheel 130, the main body of the ladder is pulled up, rotated, and retracted to the extreme position. And by fixing the two ends of the retractable steel cable 310, the stability of its position is ensured.

[0052] See also Figure 1 and Figure 3 , the first safety pile 225 and the second safety pile 226 are both provided with a safety steel cable 320; the safety steel cables 320 of the first safety pile 225 and the second safety pile 226 are respectively connected to the bottom of the first retracting wheel 120 and the second retracting wheel 130. After the safety ladder 110 is lowered to the designated working position, the workers will work on the safety ladder 110, which will increase the load of the safety ladder 110. When the retracting steel cable 310 is used for a long time, stress concentration will occur, and there is a risk of breaking; in order to extend its service life and avoid the risk of falling during work when it breaks, another safety steel cable 320 is set. The safety steel cable 320 is set as a chain, which can withstand greater force and has stronger safety performance. Since the safety steel cable 320 does not need to be transmitted, but only needs to be subjected to an auxiliary force, a chain-shaped safety steel cable 320 is used.

[0053] Preferably, when the main body of the ladder is folded, the angle between it and the floor base plate 210 is 90°; when in use, the maximum angle between the main body of the ladder and the floor base plate 210 is 135°. The length of the safety steel cable 320 is fixed. Generally, there is a limit position for retracting the safety ladder 110, that is, the maximum angle between the safety ladder 110 and the floor base plate 210 is fixed. Too large an angle is not conducive to the workers' work. Therefore, the safety steel cable 320 is set according to the length at the maximum angle that can be reached, and generally, when in use, it is directly used at the maximum angle. At the maximum angle, the safety ladder 110 is also closest to the top of the truck head.

[0054] See also Figure 4 The first retracting wheel 120 includes a base 121 and a rotating shaft 122; bearings are provided on both sides of the base 121; the rotating shaft 122 is installed through the bearings on both sides of the base 121. A mounting groove is provided on the rotating shaft 122; the rotating shaft 122 is provided with a connecting wheel 123 through the mounting groove; at least one steel cable groove 124 is provided on the connecting wheel 123; the retracting steel cable 310 is arranged in the steel cable groove 124.

[0055] See also Figure 4 The base 121 is the basic component of the first retracting wheel 120, which plays a supporting and fixing role. The setting of the base 121 requires stability and reliability, and can withstand various forces generated by the retracting wheel during operation. In order to ensure the smooth operation of the rotating shaft 122, bearings are provided on both sides of the base 121. The selection of bearings needs to consider their load-bearing capacity, friction coefficient and wear resistance to ensure that the retracting wheel will not fail during long-term operation. The rotating shaft 122 is the core component of the first retracting wheel 120, responsible for transmitting power and bearing loads. The rotating shaft 122 is installed through the bearings on both sides of the base 121 to form a stable connection with the base 121. An installation groove is provided on the rotating shaft 122, which is for installing the connecting wheel 123. The connecting wheel 123 is fixedly connected to the rotating shaft 122 through the installation groove, and together completes the retracting function of the first retracting wheel 120. The retracting steel cable 310 is responsible for connecting the retracting wheel and the load (that is, the main body of the ladder). The retracting steel cable 310 is arranged in the steel cable groove 124, and can be retracted and released according to the needs of the load. Preferably, the first contraction wheel 120 , the second contraction wheel 130 , the first intermediate wheel 223 and the second intermediate wheel 224 are arranged in the same manner.

[0056] Working principle:

[0057] The main body of the cloud ladder is rotatably connected to the floor base plate 210, and one end of the main body of the cloud ladder is provided with a first retracting wheel 120 and a second retracting wheel 130, which are connected to the first retracting seat 221 and the second retracting seat 222 through the first intermediate wheel 223 and the second intermediate wheel 224 via the retracting steel cable 310. The first retracting seat 221 and the second retracting seat 222 are retracted at the same time, and the two retracting steel cables 310 are retracted at the same time, driving the main body of the cloud ladder to rotate based on the floor base plate 210, so that the angle between the main body of the cloud ladder and the floor base plate 210 is 90°. At this time, the main body of the cloud ladder is folded on the safety guardrail 211 as a part of the safety guardrail 211. Simultaneously, the first retracting seat 221 and the second retracting seat 222 are started to retract, and the two retracting steel cables 310 are released, so that the main body of the ladder rotates based on the floor base plate 210, and the angle between the main body and the floor base plate 210 increases slowly. When it increases to 135°, the safety steel cable 320 reaches the extreme position, fixing the position of the main body of the ladder, so that the main body of the ladder is suspended on the floor base plate 210 for operation.

[0058] Example 3

[0059] See also Figure 1 The embodiment of the utility model provides a safety ladder device and its installation structure, which have the following beneficial effects: First, the device realizes the rotation connection between the ladder body and the floor base plate 210, so that the ladder can be easily folded and unfolded, which improves the convenience of use. Secondly, through the cooperation of the first retracting wheel 120, the second retracting wheel 130, the first intermediate wheel 223 and the second intermediate wheel 224, the ladder body is stably retracted and released, ensuring the stability and safety of the ladder. In addition, the setting of the safety steel cable 320 further enhances the safety performance of the ladder and avoids dangerous situations caused by the breakage of the retracting steel cable 310.

[0060] In practical applications, the safety ladder device and its installation structure can effectively meet various floor heights and operation requirements. The maximum angle between the ladder body and the floor base plate 210 is set to 135°, which not only ensures the working space of the workers, but also avoids the safety hazards caused by excessive angles. At the same time, the length of the safety steel cable 320 is fixed to ensure the stability of the ladder at the maximum angle.

[0061] In addition, the device has a long service life. Due to the reasonable configuration of the retracting steel cable 310 and the safety steel cable 320, the device is not prone to stress concentration and breakage during long-term use. At the same time, the wear resistance and corrosion resistance of each component have also been fully considered, so that the device can maintain a good working condition in various harsh environments. The safety ladder device and its installation structure have the advantages of reasonable structure, easy use, safety and reliability, and long service life.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A safety ladder device, characterized in that: The ladder comprises a main body and a connecting portion; the main body comprises a safety ladder (110); both sides of the safety ladder (110) are provided with channel steels (111) with openings facing outwards; the connecting portion is provided at one end of the safety ladder (110); both sides of the other end of the safety ladder (110) are provided with a first retracting wheel (120) and a second retracting wheel (130); and an I-beam (112) is provided at the end of the safety ladder (110); A first guardrail (113) and a second guardrail (114) are provided on both sides of the safety ladder (110); a third guardrail is also provided at an end of the safety ladder (110) away from the opening; the safety ladder (110) is provided with a plurality of steps (116); the first guardrail (113), the second guardrail (114) and the third guardrail surround the steps (116); The first guardrail (113) and the second guardrail (114) are respectively arranged on the channel steels (111) on both sides of the safety ladder (110); the third guardrail is arranged on the I-beam (112) at the end of the safety ladder (110); the width of the I-beam (112) is greater than the width between the channel steels (111) on both sides of the safety ladder (110); the first guardrail (113), the second guardrail (114) and the third guardrail are all provided with a safety height.

2. A mounting structure, comprising a floor base (210) and a mounting platform (220); characterized in that: The invention comprises a safety ladder device as claimed in claim 1; a safety guardrail (211) is provided on one side of the floor base plate (210); an opening is provided in the middle of the safety guardrail (211); the mounting platform (220) is arranged at a high position of the floor base plate (210) and is supported by the floor base plate (210); A first limiting frame (212) and a second limiting frame (213) are respectively provided on both sides of the opening; a first retractable seat (221) and a second retractable seat (222) are respectively provided on both sides of one end of the installation platform (220); and a first intermediate wheel (223) and a second intermediate wheel (224) are respectively provided on both sides of the other end of the installation platform (220); The floor base plate (210) is provided with a first rotating seat (214) and a second rotating seat on both sides outside the opening respectively; both sides of one end of the safety ladder (110) are connected to the first rotating seat (214) and the second rotating seat respectively; the main body of the ladder is arranged between the first limiting frame (212) and the second limiting frame (213).

3. A mounting structure according to claim 2, characterized in that: The connection portion connects the ladder body to the floor base plate (210) by connecting to the first rotating seat (214) and the second rotating seat.

4. A mounting structure according to claim 3, characterized in that: The first shrinking wheel (120) and the second shrinking wheel (130) are respectively arranged at two ends of the top of the I-beam (112).

5. A mounting structure according to claim 4, characterized in that: The first retractable seat (221) and the second retractable seat (222) are respectively connected to the first retractable wheel (120) and the second retractable wheel (130) via retractable steel cables (310); the retractable steel cables (310) connecting the first retractable seat (221) and the second retractable seat (222) with the first retractable wheel (120) and the second retractable wheel (130) respectively pass through the first intermediate wheel (223) and the second intermediate wheel (224).

6. A mounting structure according to claim 5, characterized in that: The first safety pile (225) and the second safety pile (226) are both provided with a safety steel cable (320); the safety steel cables (320) of the first safety pile (225) and the second safety pile (226) are respectively connected to the bottom of the first retracting wheel (120) and the bottom of the second retracting wheel (130).

7. The installation structure according to claim 5, characterized in that: When the ladder body is folded, the angle between the ladder body and the floor base plate (210) is 90°; when in use, the maximum angle between the ladder body and the floor base plate (210) is 135°.

8. The installation structure according to claim 7, characterized in that: The first shrinking wheel (120) comprises a base (121) and a rotating shaft (122); bearings are provided on both sides of the base (121); and the rotating shaft (122) is installed via the bearings on both sides of the base (121).

9. The installation structure according to claim 8, characterized in that: The rotating shaft (122) is provided with a mounting groove; the rotating shaft (122) is provided with a connecting wheel (123) through the mounting groove; the connecting wheel (123) is provided with at least one steel cable groove (124); and the retractable steel cable (310) is arranged in the steel cable groove (124).

10. The installation structure according to claim 9, characterized in that: The first contraction wheel (120), the second contraction wheel (130), the first intermediate wheel (223), and the second intermediate wheel (224) are arranged in the same manner.

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