Safety platform suitable for operation on vertical ladder of nuclear power station

Abstract

The utility model provides a safety platform suitable for operation on a vertical ladder of a nuclear power station, and relates to the technical field of nuclear power station operation crawling ladders and operation platforms, the safety platform is detachably connected to the vertical ladder, the safety platform comprises an operation platform body, a supporting assembly, a first hanging piece and a second hanging piece, and the operation platform body is horizontally and fixedly connected to the upper portion of the supporting assembly; the first hooking piece is fixedly connected to the side, facing the vertical ladder, of the supporting assembly or / and the working platform; the second hanging piece is fixedly connected to the side, facing the vertical ladder, of the supporting assembly, and the second hanging piece is located below the first hanging piece; and the first hanging piece and the second hanging piece are respectively and detachably hung on upper and lower adjacent or alternate treading cross rods of the vertical ladder. The supporting assembly and the working platform are detachably hung on the vertical ladder through the first hanging piece and the second hanging piece, so that the working efficiency is improved, the falling risk is avoided, the safety is higher, the structure is simple, the operation is convenient, and the cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power plant operation ladders and operation platforms, and in particular to a safety platform suitable for operations on vertical ladders in nuclear power plants. Background Art

[0002] With the production and operation needs of underground integrated pipe corridors, tall equipment, and buildings, various vertical escape hatches and vertical ladders are increasingly used, and the time spent working on vertical ladders is also increasing. For example, regular maintenance of equipment, cable laying, and pipeline installation all require work on vertical ladders. Since there is no working surface on the vertical ladder, when working on the vertical ladder, you can only step on the stepping bar of the vertical ladder and wear a safety belt. However, due to the structural limitations of the vertical ladder itself, the contact area between the foot and the stepping bar is relatively small, and there is a risk of slipping, which increases the difficulty of construction and the risk of falling from height, and poses a safety hazard. In addition, this method of operation does not meet the relevant operating procedures of nuclear power plants.

[0003] If scaffolding is used to assist in constructing a working surface on a vertical ladder, it will not only increase the workload, be time-consuming and labor-intensive, but also be very inefficient. Utility Model Content

[0004] The present application provides a safety platform suitable for working on a vertical ladder in a nuclear power plant, which is used to solve the problem that there is no working surface on the vertical ladder in a nuclear power plant, which makes working on the vertical ladder inconvenient, there are safety risks, and it is time-consuming, labor-intensive, and has low working efficiency. The safety platform suitable for working on a vertical ladder in a nuclear power plant provided by the present application detachably hangs the support assembly and the working platform on the vertical ladder through a first hanging member and a second hanging member, thereby achieving the purpose of quickly constructing a working surface on the vertical ladder in a nuclear power plant, facilitating personnel to step on the work, improving working efficiency, avoiding the risk of falling, and being safer. In addition, the safety platform of the present application is disassembled and assembled by a hanging method with the vertical ladder, which is more convenient to operate, and has a simple structure and low cost.

[0005] The present application provides a safety platform suitable for working on a vertical ladder in a nuclear power plant, which is detachably connected to the vertical ladder. The safety platform comprises a working platform, a supporting assembly, a first hanging member, and a second hanging member, wherein: the working platform is horizontally fixedly connected to the upper part of the supporting assembly; the first hanging member is fixedly connected to the supporting assembly or / and the side of the working platform facing the vertical ladder; the second hanging member is fixedly connected to the side of the supporting assembly facing the vertical ladder, and the second hanging member is below the first hanging member; the first hanging member and the second hanging member are respectively detachably hung on the upper and lower adjacent or alternate stepping cross bars of the vertical ladder to hang the supporting assembly and the working platform on the vertical ladder.

[0006] In some embodiments, it also includes a first anti-slip component and a second anti-slip component, wherein: the first anti-slip component is detachably connected between the first hanging member and / or the supporting member and / or the working platform, and the first anti-slip component is at least partially longitudinally passed through the first hanging member and stopped below the corresponding pedal cross bar to limit the first hanging member to the corresponding pedal cross bar; the second anti-slip component is detachably connected between the second hanging member and / or the supporting member, and the second anti-slip component is at least partially longitudinally passed through the second hanging member and stopped below the corresponding pedal cross bar to limit the second hanging member to the corresponding pedal cross bar.

[0007] In some embodiments, a pulling member is further included, and the pulling member is detachably connected between the vertical ladder and the working platform and / or the supporting assembly diagonally downward.

[0008] In some embodiments, the first hanging member includes a first top plate and a first side plate, the first top plate is horizontally arranged, and the first side plates are vertically fixedly connected to the two sides of the first top plate and extend downward, so that the first hanging member forms a U-shaped groove structure opening downward; the second hanging member includes a second top plate and a second side plate, the second top plate is horizontally arranged, and the second side plates are vertically fixedly connected to the two sides of the second top plate and extend downward, so that the second hanging member forms a U-shaped groove structure opening downward.

[0009] In some embodiments, the groove depths of the U-shaped groove structures of the first hanging member and the second hanging member are both greater than or equal to the cross-sectional height of the pedal cross bar.

[0010] In some embodiments, a folded edge is provided on a side of the working platform facing the vertical ladder, and the folded edge is bent vertically downward and extends laterally. The first side plate corresponding to the first hanging member facing away from the vertical ladder abuts against and is fixedly connected to the folded edge.

[0011] In some embodiments, the support assembly includes a fixed frame, a horizontal support arm and an oblique support arm, wherein: the fixed frame is arranged parallel to the vertical ladder; there are at least two horizontal support arms, which are arranged horizontally and longitudinally opposite to each other, and one end of the horizontal support arm facing the vertical ladder is fixedly connected to the upper part of the fixed frame, and the working platform is fixedly connected to the horizontal support arm; there are at least two oblique support arms, which are respectively fixedly connected obliquely upward to the lower part of the fixed frame or / and between the second hanging member and the corresponding horizontal support arm to form support for the working platform.

[0012] In some embodiments, the fixing frame includes a vertical tube portion and a transverse tube portion, there are at least two vertical tube portions, and the transverse tube portions are vertically oppositely arranged, and the transverse tube portions are transversely fixedly connected between the vertical tube portions.

[0013] In some embodiments, the number of horizontal arms and oblique arms matches the number of vertical tube portions; one end of the horizontal arm facing the vertical ladder is fixedly connected to the upper end of the corresponding vertical tube portion; the oblique arms are fixedly connected obliquely upward between the lower portion of the corresponding vertical tube portion and the corresponding horizontal arm.

[0014] In some embodiments, each of the horizontal support arms includes a supporting top plate and a supporting side plate. The supporting top plate is horizontally and longitudinally arranged, and the supporting side plates are vertically fixedly connected to at least one side of the longitudinal direction of the supporting top plate and extend downward, so that the horizontal support arm forms an inverted L-shaped groove structure or a downward-opening U-shaped groove structure.

[0015] The safety platform provided by the present application is suitable for working on the vertical ladder of a nuclear power plant. The working platform is horizontally fixedly connected to the upper part of the supporting assembly, the first hanging member is fixedly connected to the supporting assembly or / and the side of the working platform facing the vertical ladder, the second hanging member is fixedly connected to the side of the supporting assembly facing the vertical ladder, and is correspondingly located below the first hanging member, and the first hanging member and the second hanging member are respectively detachably hung on the upper and lower adjacent or alternate stepping cross bars of the vertical ladder. The safety platform provided by the present application realizes the horizontal fixation and support of the working platform through the supporting assembly, and the supporting assembly and the working platform are detachably hung on the adjacent or alternate stepping cross bars on the vertical ladder through the upper and lower groups of correspondingly arranged first hanging members and second hanging members, so as to realize the purpose of quickly constructing the working surface on the vertical ladder, so that the operating personnel can stand on the working platform to perform related operations, which is convenient for the personnel to step on the operation, improves the working efficiency, and avoids the risk of falling. In addition, the safety platform of the present application adopts a hanging method between the vertical ladder to realize the quick disassembly and assembly of the working surface, which has a simple structure, convenient operation, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, including:

[0017] Figure 1 This is a schematic structural diagram of a safety platform installed on a vertical ladder in one embodiment of the present application;

[0018] Figure 2This is a schematic diagram of the overall structure of a security platform according to one embodiment of the present application;

[0019] Figure 3 A schematic diagram of the decomposition structure of a security platform according to one embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. According to the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementation methods.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" mentioned in this application includes direct and indirect connections unless otherwise specified. In addition, the orientations or positional relationships indicated by "upper", "lower", "length direction", "width direction", "lateral", "longitudinal", "vertical", "horizontal", "inside", "outside", "front", "back", "left", "right", etc. mentioned in this application, and the orientations or positional relationships shown in the drawings are only for the convenience of describing this application and simplifying the description, and are not limitations on the technical solutions of this application.

[0022] See also Figure 1 to Figure 2 The present application provides a safety platform suitable for working on a vertical ladder in a nuclear power plant. The safety platform is detachably connected to a vertical ladder 1. The vertical ladder 1 includes two vertically oppositely arranged columns 11, and a plurality of tread bars 12 that are laterally fixedly connected between the two columns 11 and arranged at equal intervals. The columns 11 are fixed to the wall of the nuclear power plant facility (not shown) by a supporting and fixing assembly 13, so that the vertical ladder 1 is vertically fixedly connected to the outer wall of the nuclear power plant facility, and sufficient clearance is left between each tread bar 12 and the wall for stepping on and hanging the safety platform of the present application.

[0023] The safety platform of the present application includes a work platform 2, a support assembly 3, a first hook 4, and a second hook 5, wherein: the work platform 2 is horizontally fixedly connected to the upper part of the support assembly 3, so as to horizontally fix and support the work platform 2 through the support assembly 3. The first hook 4 is fixedly connected to the support assembly 3 or / and the side of the work platform 2 facing the vertical ladder 1. The second hook 5 is fixedly connected to the side of the support assembly 3 facing the vertical ladder 1, and the second hook 5 is correspondingly located below the first hook 4, so that the first hook 4 and the second hook 5 form a corresponding layout form of upper and lower.

[0024] The first hanging member 4 and the second hanging member 5 are detachably hung on the upper and lower adjacent or alternate stepping cross bars 12 of the vertical ladder 1 , respectively, so as to hang the supporting assembly 3 and the working platform 2 on the vertical ladder 1 .

[0025] It can be understood that the first hanging member 4 can be fixedly connected to the supporting assembly 3, can also be fixedly connected to the working platform 2, and can also be fixedly connected to both the supporting assembly 3 and the working platform 2. The present application does not limit this. The first hanging member 4 can correspond to the second hanging member 5 at the upper and lower parts, and the supporting assembly 3 and the working platform 2 can be hung on the vertical ladder 1 through the first hanging member 4 and the second hanging member 5.

[0026] When a person steps on the working platform 2 , the force on the platform can be transmitted to the stepping crossbar 12 of the vertical ladder 1 through the supporting assembly 3 and the first and second hanging components 4 , 5 , thereby achieving stable support for the working platform 2 .

[0027] The safety platform provided by the present application is suitable for working on the vertical ladder 1 of a nuclear power plant, wherein the working platform 2 is horizontally fixedly connected to the upper part of the supporting assembly 3, the first hanging member 4 is fixedly connected to the supporting assembly 3 or / and the side of the working platform 2 facing the vertical ladder 1, the second hanging member 5 is fixedly connected to the side of the supporting assembly 3 facing the vertical ladder 1, and is correspondingly located below the first hanging member 4, and the first hanging member 4 and the second hanging member 5 are respectively detachably hung on the upper and lower adjacent or alternate stepping cross bars 12 of the vertical ladder 1. The safety platform provided by the present application realizes the horizontal fixation and support of the working platform 2 through the supporting assembly 3, and detachably hangs the supporting assembly 3 and the working platform 2 on the adjacent or alternate stepping cross bars 12 on the vertical ladder 1 through the upper and lower groups of correspondingly arranged first hanging members 4 and second hanging members 5, so as to realize the purpose of quickly constructing a working surface on the vertical ladder 1, so that the operating personnel can stand on the working platform 2 to perform related operations, which is convenient for the personnel to step on the operation, improves the operation efficiency, and avoids the risk of falling. In addition, the safety platform of the present application and the vertical ladder 1 are connected in a hanging manner to realize quick disassembly and assembly of the working surface, which has a simple structure, convenient operation and low cost.

[0028] It can be understood that the distance between the first hanging member 4 and the second hanging member 5 matches the distance between the upper and lower adjacent or alternate pedal cross bars 12 to ensure that the first hanging member 4 and the second hanging member 5 can be reliably hung with the corresponding pedal cross bars 12.

[0029] It can be understood that the first hanging member 4 and the second hanging member 5 can be set to the same structure or different structures; at the same time, the first hanging member 4 and the second hanging member 5 can be set to only one or more respectively, and the present application does not limit this. The support assembly 3 and the working platform 2 can be stably and reliably hung on the vertical ladder 1 through the first hanging member 4 and the second hanging member 5.

[0030] For example, when only one of the first hanging component 4 and the second hanging component 5 is provided, in order to avoid the platform from shifting or tilting after hanging, the first hanging component 4 and the second hanging component 5 can be arranged to be relatively located in the middle position of the pedal cross bar 12. Furthermore, the single first hanging component 4 and the second hanging component 5 can be arranged to be a structure extending along the length direction of the corresponding pedal cross bar 12 to increase the hanging contact area between the hanging component and the corresponding pedal cross bar 12, thereby improving the stability and reliability of the hanging between the hanging component and the pedal cross bar 12.

[0031] For example, when there are multiple first hanging components 4 and second hanging components 5, in order to avoid the platform from shifting or tilting after hanging, the multiple first hanging components 4 and second hanging components 5 can be arranged evenly along the length direction of the corresponding pedal cross bar 12 to increase the hanging points between the hanging components and the corresponding pedal cross bar 12, thereby improving the stability and reliability of the hanging between the hanging components and the pedal cross bar 12.

[0032] It can be understood that the number of the first hanging parts 4 and the second hanging parts 5 can be the same or different, and the present application does not limit this. It is sufficient that the supporting assembly 3 and the working platform 2 can be stably and reliably hung on the vertical ladder 1 through the first hanging parts 4 and the second hanging parts 5.

[0033] For example, two first hanging members 4 and one second hanging member 5 can be provided, and the three hanging members are hung on adjacent or alternate tread bars 12 on the vertical ladder 1 in the form of an inverted triangle. Alternatively, one first hanging member 4 and two second hanging members 5 can be provided, and the three hanging members are hung on adjacent or alternate tread bars 12 on the vertical ladder 1 in the form of an equilateral triangle.

[0034] Of course, the number and layout of the first hanging member 4 and the second hanging member 5 of the present application also include many other situations, which will not be listed here one by one. It is sufficient that the supporting assembly 3 and the working platform 2 can be stably and reliably hung on the vertical ladder 1 through the first hanging member 4 and the second hanging member 5.

[0035] See also Figure 1 to Figure 2 In some embodiments, the safety platform of the present application also includes a first anti-slip component 6 and a second anti-slip component 7, wherein: the first anti-slip component 6 is detachably connected between the first hanging component 4 and / or the supporting component 3 and / or the working platform 2, and the first anti-slip component 6 is at least partially longitudinally penetrated through the first hanging component 4 and stopped below the corresponding pedal cross bar 12 to limit the first hanging component 4 on the corresponding pedal cross bar 12.

[0036] The second anti-slip component 7 is detachably connected between the second hanging component 5 and / or the supporting component 3, and the second anti-slip component 7 is at least partially longitudinally penetrated through the second hanging component 5 and stopped below the corresponding pedal cross bar 12 to limit the second hanging component 5 on the corresponding pedal cross bar 12.

[0037] It can be understood that the first anti-detachment component 6 can be connected to the first hanging member 4, or to the first hanging member 4 and the supporting component 3, or to the first hanging member 4 and the working platform 2, or to the first hanging member 4, the supporting component 3 and the working platform 2 at the same time; the second anti-detachment component 7 can be connected to the second hanging member 5, or to the second hanging member 5 and the supporting component 3 at the same time. The present application does not make any limitation on this. The first anti-detachment component 6 and the second anti-detachment component 7 can be used to limit the hanging member to the corresponding pedal cross bar 12 to prevent the hanging member from detaching upward from the pedal cross bar 12.

[0038] The safety platform provided by the present application has a first anti-slip assembly 6 that is detachably connected between the first hook 4 and the support assembly 3 or / and the working platform 2, and a second anti-slip assembly 7 that is detachably connected between the second hook 5 and the support assembly 3, and the first anti-slip assembly 6 and the second anti-slip assembly 7 are at least partially longitudinally penetrated through the corresponding hook and stopped below the corresponding stepping crossbar 12, so that the first anti-slip assembly 6 and the second anti-slip assembly 7 can prevent the first hook 4 and the second hook 5 from upwardly detaching from the stepping crossbar 12, thereby playing a protective role in preventing the working platform 2 and the support assembly 3 from upwardly detaching from the stepping crossbar 12 of the vertical ladder 1, and can prevent the safety platform from detaching from the vertical ladder 1 during use, thereby providing higher safety. In addition, the first anti-slip assembly 6 and the second anti-slip assembly 7 can also improve the strength and reliability of the fixed connection between the corresponding hook and the support assembly 3 or / and the working platform 2.

[0039] It can be understood that the number of first anti-detachment components 6 is not less than the number of first hanging parts 4, and the number of second anti-detachment components 7 is not less than the number of second hanging parts 5, so as to ensure that each hanging part is equipped with an anti-detachment component to prevent the hanging part from detaching from the corresponding pedal cross bar 12.

[0040] For example, when both the first hanging member 4 and the second hanging member 5 are provided with one, the first anti-slip assembly 6 and the second anti-slip assembly 7 can be provided with two, respectively connected to the two ends of the length direction of the first hanging member 4 and the second hanging member 5, so as to effectively limit the hanging members on the corresponding trample cross bar 12 from both ends. Of course, the first anti-slip assembly 6 and the second anti-slip assembly 7 can also be provided with one, respectively connected to the middle position of the first hanging member 4 and the second hanging member 5, so that the hanging members can also be effectively limited on the corresponding trample cross bar 12 by the corresponding first anti-slip assembly 6 and the second anti-slip assembly 7 provided at the upper and lower parts.

[0041] In actual use, the first anti-slip assembly 6 and the second anti-slip assembly 7 can be disassembled first to avoid interference of the anti-slip assembly with the lower opening of the hanging member, so that the first hanging member 4 and the second hanging member 5 can be hung on the corresponding stepping cross bar 12 from top to bottom. After hanging, the first anti-slip assembly 6 and the second anti-slip assembly 7 are respectively installed on the corresponding hanging member and the supporting assembly 3 or / and the working platform 2 and locked to achieve the limit of the hanging member. After the safety platform is used, the first anti-slip assembly 6 and the second anti-slip assembly 7 are disassembled to facilitate the upward separation of the hanging member and the stepping platform, so as to achieve the separation of the safety platform from the vertical ladder 1.

[0042] See also Figure 1 to Figure 2 The safety platform of the present application further comprises a pulling member 8, which is detachably connected between the vertical ladder 1 and the working platform 2 and / or the supporting assembly 3 in an oblique downward manner.

[0043] The position where the vertical ladder 1 is connected to the pulling member 8 is higher than the position where the working platform 2 or / and the supporting assembly 3 is connected to the pulling member 8 , so as to form a pulling force on the working platform 2 .

[0044] The safety platform of the present application connects the vertical ladder 1 and the working platform 2 and / or the supporting assembly 3 through a pulling member 8, and forms a pulling force on the working platform 2, which can prevent the working platform 2 from tilting downward or overturning due to excessive load, further improving the reliability and stability of the connection between the safety platform of the present application and the vertical ladder 1, and ensuring the safe operation of personnel on the platform.

[0045] It can be understood that only one pulling member 8 can be provided, preferably for pulling the working platform 2 or the supporting assembly 3 obliquely downward from one side of the vertical ladder 1; two pulling members 8 can be provided, for pulling the working platform 2 or the supporting assembly 3 obliquely downward from both sides of the vertical ladder 1 at the same time; more than two pulling members 8 can also be provided, so that one side of the vertical ladder 1 can be connected to multiple pulling members 8 at the same time.

[0046] It can be understood that the upper end of the pulling member 8 can be detachably connected to the column 11 of the vertical ladder 1, or can be detachably connected to the stepping crossbar 12 of the vertical ladder 1. This application does not limit this. It only needs to realize the detachable connection between one end of the pulling member 8 and the vertical ladder 1. Similarly, the lower end of the pulling member 8 can be detachably connected to the working platform 2, or can be detachably connected to the supporting assembly 3, or can be detachably connected to the working platform 2 and the supporting assembly 3 at the same time. This application does not limit this. It only needs to realize the pulling of the working platform 2 or the supporting assembly 3 through the pulling member 8 to prevent the working platform 2 from tilting downward or overturning.

[0047] Preferably, two pulling members 8 are provided, which simultaneously pull the working platform 2 or the supporting assembly 3 obliquely downward from both sides of the vertical ladder 1, thereby achieving reliable pulling of the working platform 2, while also being able to reduce the number of pulling members 8 provided, reduce the workload of disassembling and assembling the pulling members 8, and improve the disassembly and assembly efficiency of the safety platform.

[0048] Preferably, the lower end of the pulling member 8 is connected to a side of the working platform 2 away from the vertical ladder 1 to form a reliable pulling on the working platform 2.

[0049] Preferably, the pulling member 8 is made of 6# round steel, and the vertical height between the upper end of the pulling member 8 and the working platform 2 is preferably 10-15 cm.

[0050] See also Figures 1 to 3 In a specific embodiment, the upper end of the pulling member 8 is set as an inverted L-shaped structure hook 81, and the pulling member 8 is detachably hung on the corresponding stepping crossbar 12 of the vertical ladder 1 (located above the corresponding stepping crossbar 12 of the first hanging member 4) through the hook 81, so as to facilitate the hanging and disassembly between the upper end of the pulling member 8 and the vertical ladder 1, and facilitate user operation. The lower end of the pulling member 8 passes downward through the working platform 2 and the supporting assembly 3, and is fixed by a locking nut 82, so as to facilitate the detachable connection between the lower end of the pulling member 8 and the working platform 2 and the supporting assembly 3, and facilitate user operation.

[0051] Of course, in some other embodiments, the upper end of the pulling member 8 can also be detachably connected to the column 11 of the vertical ladder 1 through a threaded fastener (not shown), and the column 11 is provided with a plurality of column pulling holes (not shown) for inserting the threaded fastener. Compared with the connection method in which the pulling member 8 is hung on the corresponding stepping crossbar 12 through the hook 81, the upper end of the pulling member 8 is connected to the column 11 of the vertical ladder 1 through the threaded fastener, which can improve the reliability of the connection between the pulling member 8 and the vertical ladder 1, but it will be slightly inconvenient during disassembly.

[0052] See also Figure 2 In some embodiments, the first hanging component 4 includes a first top plate 41 and a first side plate 42. The first top plate 41 is horizontally arranged along the length direction of the pedal cross bar 12, and the first side plate 42 is vertically fixedly connected to the two sides of the first top plate 41 and extends downward, so that the first hanging component 4 forms a U-shaped groove structure opening downward.

[0053] The second hanging component 5 includes a second top plate 51 and a second side plate 52. The second top plate 51 is horizontally arranged along the length direction of the pedal cross bar 12, and the second side plates 52 are vertically fixedly connected to the two sides of the second top plate 51 and extend downward, so that the second hanging component 5 forms a U-shaped groove structure opening downward.

[0054] The U-shaped groove structure of the hanging part opens downward, so that the safety platform of the present application can be quickly disassembled and assembled with the vertical ladder 1 by the first hanging part 4 and the second hanging part 5 in a downward hanging and upward separation manner, and the structure is simple and the material is convenient to obtain. The suitable type of channel steel (with a U-shaped cross section) purchased from the steel market can be used and cut and manufactured according to the length of the stepping crossbar 12 of the vertical ladder 1, which can reduce the manufacturing cost of the safety platform of the present application.

[0055] It is understandable that the model of the channel steel needs to match the cross-sectional size of the pedal cross bar 12 to prevent excessive gaps between the first side plate 42 and the second side plate 52 and the corresponding pedal cross bar 12 after hanging, so as to ensure the stability and reliability of the hanging.

[0056] In order to ensure that the first hanging member 4 and the second hanging member 5 can be hung on the pedal cross bar 12, the length of the first hanging member 4 and the second hanging member 5 in the horizontal direction cannot be greater than the length of the pedal cross bar 12 in the horizontal direction. That is, the length of the first hanging member 4 and the second hanging member 5 can be set to be equal to the length of the pedal cross bar 12, or can be set to be less than the length of the pedal cross bar 12. In this way, the number of hanging members can be adjusted accordingly according to the length of the first hanging member 4 and the second hanging member 5.

[0057] Preferably, the first hanging member 4 and the second hanging member 5 are both made of 6# channel steel.

[0058] See also Figure 1 In some embodiments, the lengths of the first hanging member 4 and the second hanging member 5 are set to be equal to or slightly less than the length of the stepping cross bar 12. In this way, the first hanging member 4 and the second hanging member 5 can be set to be one. Through these two upper and lower corresponding first hanging members 4 and second hanging members 5, the supporting assembly 3 and the working platform 2 can be stably and reliably hung on the vertical ladder 1.

[0059] The length of the first hanging member 4 and the second hanging member 5 is set to match the length of the pedal crossbar 12, so that the entire length range of the hanging member can be used as the hanging position between the corresponding pedal crossbar 12, and it is ensured that there is a sufficiently large hanging contact area between the hanging member and the corresponding pedal crossbar 12, which can significantly improve the reliability and stability of the hanging between the safety platform of the present application and the vertical ladder 1. In addition, the length of the first hanging member 4 and the second hanging member 5 is set to match the length of the pedal crossbar 12. After hanging, the safety platform cannot move back and forth along the length direction of the pedal crossbar 12 compared to the vertical ladder 1, and the hanging stability is better.

[0060] When the first hanging member 4 and the second hanging member 5 are set to match the length of the stepping cross bar 12, the first anti-slip assembly 6 and the second anti-slip assembly 7 are preferably provided with two, respectively, so as to limit the hanging member on the corresponding stepping cross bar 12 from both ends of the hanging member in the length direction. In this way, the number of hanging members and anti-slip assemblies can be significantly reduced, which can simplify the structure of the safety platform and reduce the production cost of the safety platform on the one hand, and reduce the workload of disassembling and assembling the safety platform on the other hand, and improve the disassembly and assembly efficiency.

[0061] In some embodiments, the length of the first hanging member 4 and the second hanging member 5 can also be set to be less than half the length of the stepping cross bar 12, so that the first hanging member 4 and the second hanging member 5 can be set to two or more. A plurality of first hanging members 4 and second hanging members 5 are respectively arranged in a corresponding manner in the transverse direction, preferably evenly distributed along the length direction of the stepping cross bar 12, and through these upper and lower corresponding first hanging members 4 and second hanging members 5, the support assembly 3 and the working platform 2 can also be stably and reliably hung on the vertical ladder 1.

[0062] In some embodiments, the groove depth of the U-shaped groove structure of the first hanging member 4 and the second hanging member 5 is greater than or equal to the cross-sectional height of the trample crossbar 12. The minimum groove depth of the U-shaped groove structure of the first hanging member 4 and the second hanging member 5 matches the cross-sectional height of the trample crossbar 12 to ensure that the opposite side plates of the hanging member can form an effective limit to the trample crossbar 12 and ensure the reliability of the hanging. When the groove depth of the first hanging member 4 and the second hanging member 5 is equal to the cross-sectional height of the trample crossbar 12, in order to achieve the connection between the anti-slip assembly and the hanging member, a partially downwardly extending extension (not shown) can be set at the corresponding position of the side plate of the hanging member, and the corresponding extension is used as the plug-in fixing position of the anti-slip assembly to achieve locking and limiting between the hanging member and the corresponding trample crossbar 12.

[0063] When the groove depths of the first and second hanging members 4 and 5 are greater than the cross-sectional height of the trample crossbar 12, after hanging, the first top plate 41 of the first hanging member 4 is pressed on the top of the corresponding trample crossbar 12, and the lower portion of the first side plate 42 at least partially extends downward to exceed the bottom of the corresponding trample crossbar 12. Similarly, after hanging, the second top plate 51 of the second hanging member 5 is pressed on the top of the corresponding trample crossbar 12, and the lower portion of the second side plate 52 at least partially extends downward to exceed the bottom of the corresponding trample crossbar 12.

[0064] The groove depth of the U-shaped groove structure of the first hanging member 4 and the second hanging member 5 of the safety platform of the present application is set to be greater than the cross-sectional height of the pedal cross bar 12. On the one hand, the hanging contact area between the hanging member and the corresponding pedal cross bar 12 is increased, and the hanging stability and reliability between the hanging member and the corresponding pedal cross bar 12 are ensured. On the other hand, the side plate of the hanging member extends downward to a part exceeding the corresponding pedal cross bar 12, and can also be used as a plug-in fixing position for the anti-detachment component to achieve locking and limiting between the hanging member and the corresponding pedal cross bar 12.

[0065] See also Figure 2 and Figure 3 In some embodiments, the working platform 2 is an integrated structure, including a platform body 21 for personnel to step on and work, and the platform body 21 is provided with a folded edge 22 that is bent vertically downward and extends laterally on the side facing the vertical ladder 1, and the corresponding first side plate 42 of the first hanging member 4 facing away from the vertical ladder 1 is abutted and fixedly connected to the folded edge 22.

[0066] The safety platform of the present application fixedly connects the first hanging component 4 to the folded edge 22 of the working platform 2. On the one hand, it increases the fixing surface of the working platform 2 and the first hanging component 4 and improves the reliability of the connection between the first hanging component 4 and the working platform 2. On the other hand, the structural strength of the working platform 2 is increased by setting the folded edge 22, so that the working platform 2 can withstand a larger load without being easily deformed.

[0067] Preferably, the first hanging member 4 abuts against and is welded to the folded edge 22 with the corresponding first side plate 42 facing away from the vertical ladder 1, so that the first hanging member 4 and the working platform 2 form an integral structure to improve the structural strength and reliability of the fixed connection between the two.

[0068] Preferably, the working platform 2 is formed by bending a 4.5 mm patterned steel plate, and the length and width of the working surface are set to 30-50 cm to meet the needs of single-person standing work.

[0069] See also Figure 1 to Figure 2 In some embodiments, the support assembly 3 includes a fixed frame 31, a horizontal support arm 32 and an oblique support arm 33, wherein: the fixed frame 31 is arranged parallel to the vertical ladder 1; there are at least two horizontal support arms 32, and they are arranged horizontally and longitudinally opposite to each other, and one end of the horizontal support arm 32 facing the vertical ladder 1 is fixedly connected to the upper part of the fixed frame 31, and the working platform 2 is fixedly connected to the horizontal support arm 32.

[0070] There are at least two oblique support arms 33 , which are respectively fixedly connected obliquely upward to the lower part of the fixing frame 31 or / and between the second hanging member 5 and the corresponding horizontal support arm 32 to form support for the working platform 2 .

[0071] The safety platform of the present application is fixedly connected to the corresponding horizontal support arm 32 and the fixed frame 31 by the oblique support arm 33, so that at least two triangular support structures relatively arranged along the length direction of the pedal cross bar 12 can be formed on the support component 3, thereby ensuring the overall structural strength of the support component 3 and being able to form a stable support and fixation for the working platform 2.

[0072] It can be understood that the more the horizontal support arms 32 and the oblique support arms 33 are provided, the higher the structural strength of the support assembly 3 is, and the better the effect of supporting and fixing the working platform 2 is.

[0073] Preferably, the upper end of the oblique arm 33 is fixedly connected to the side of the horizontal arm 32 away from the vertical ladder 1, preferably not less than half the length of the horizontal arm 32, so as to form a stable support for the working platform 2. More preferably, it can be fixedly connected to the outermost end of the horizontal arm 32 away from the vertical ladder 1.

[0074] Preferably, the lower end of the pulling member 8 can pass through the working platform 2 and be connected to the connection between the oblique support arm 33 and the horizontal support arm 32 to form a reliable pulling on the working platform 2.

[0075] See also Figures 2 to 3 In some embodiments, the fixing frame 31 includes a vertical tube portion 311 and a horizontal pull tube portion 312 , there are at least two vertical tube portions 311 , which are vertically oppositely arranged, and there is at least one horizontal pull tube portion 312 , which is laterally fixedly connected between the vertical tube portions 311 .

[0076] Preferably, the second hanging component 5 is transversely fixedly connected to the vertical tube portion 311 and the corresponding horizontal pull tube portion 312 to increase the fixed connection position of the second hanging component 5, improve the reliability of the fixed connection between the second hanging component 5 and the supporting assembly 3, and prevent the safety platform from falling due to the opening of the hanging component welding.

[0077] Preferably, the vertical tube portion 311 and the horizontal tube portion 312 are made of steel tubes with a specification of φ28×2.8 mm, and the vertical tube portion 311 and the horizontal tube portion 312 are welded and fixed into an integrated structure to improve the overall strength of the fixing frame 31 .

[0078] Preferably, the number of horizontal arms 32 and oblique arms 33 matches the number of vertical tubes 311. One end of the horizontal arm 32 facing the vertical ladder 1 is fixedly connected to the upper end of the corresponding vertical tube 311. The oblique arms 33 are fixedly connected obliquely upward between the lower part of the corresponding vertical tube 311 and the corresponding horizontal arm 32.

[0079] The number of horizontal arms 32 and oblique arms 33 of the safety platform of the present application matches the number of vertical tube portions 311, so that each horizontal arm 32 and oblique arm 33 can form a triangular support structure with the corresponding vertical tube portion 311, further improving the overall structural strength of the support assembly 3 and ensuring that the support assembly 3 stably supports and fixes the working platform 2.

[0080] Preferably, the height of the vertical tube portion 311 is 35-45 cm.

[0081] See also Figure 3 In some embodiments, each horizontal support arm 32 includes a support top plate 321 and a support side plate 322. The support top plate 321 is arranged horizontally and longitudinally perpendicular to the pedal cross bar 12, and the support side plate 322 is vertically fixedly connected to at least one side of the longitudinal direction of the support top plate 321 and extends downward, so that the horizontal support arm 32 constitutes an inverted L-shaped groove structure or a downward-opening U-shaped groove structure.

[0082] The horizontal support arm 32 of the safety platform of the present application is set to an L-shaped groove structure or a U-shaped groove structure, which has higher strength and can achieve stable support and fixation of the work platform 2. In addition, the horizontal support arm 32 can also be made by cutting and manufacturing the horizontal support arm 32 according to the designed length using a suitable type of groove steel (with a U-shaped cross section) or angle steel (with an L-shaped cross section) purchased from the steel market, which can reduce the manufacturing cost of the safety platform of the present application.

[0083] Preferably, the oblique support arm 33 can also be set as an L-shaped groove structure or a U-shaped groove structure. The oblique support arm 33 can also be made by using a suitable type of groove steel (with a U-shaped cross-section) or angle steel (with an L-shaped cross-section) purchased from the steel market and cutting according to the designed length, which can reduce the manufacturing cost of the safety platform of the present application.

[0084] Preferably, the horizontal support arm 32 and the oblique support arm 33 are both made of angle steel of model L40*4, and are welded and fixed to the fixing frame 31 as a whole.

[0085] See also Figure 3 In some embodiments, the first hanging component 4 is fixedly connected to the folded edge 22 of the working platform 2. The first anti-slip assembly 6 includes a first anti-slip pin 61 with a thread at the end and a first fastening nut 62 threadedly connected to the first anti-slip pin 61. Correspondingly, the lower parts of the two vertically opposite first side plates 42 of the first hanging component 4 are provided with first fixing holes 43 for the first anti-slip pin 61 to pass longitudinally. The vertical spacing between the first fixing holes 43 and the first top plate 41 is preferably slightly larger than the cross-sectional height of the pedal crossbar 12 to ensure that the first anti-slip pin 61 will not interfere with the pedal crossbar 12 after hanging. A third fixing hole 221 is provided at the corresponding position of the folded edge 22 corresponding to the first fixing hole 43.

[0086] The second anti-dropout assembly 7 includes a second anti-dropout pin 71 with a thread at the end thereof and a second fastening nut 72 threadedly connected to the second anti-dropout pin 71. In coordination, the lower portions of the two vertically opposite second side plates 52 of the second hanging member 5 are provided with corresponding second fixing holes 53 for the second anti-dropout pin 71 to longitudinally pass through, and the vertical spacing between the second fixing holes 53 and the second top plate 51 is preferably slightly larger than the cross-sectional height of the stepping crossbar 12, so as to ensure that the second anti-dropout pin 71 will not interfere with the stepping crossbar 12 after being hung.

[0087] A fourth fixing hole 3111 is disposed at a position of the vertical tube portion 311 corresponding to the first fixing hole 43 and the third fixing hole 221 , and a fifth fixing hole 3112 is disposed at a position of the vertical tube portion 311 corresponding to the second fixing hole 53 .

[0088] In actual use, after the first hanging member 4 and the second hanging member 5 are hung on the corresponding stepping cross bar 12, the first anti-drop pin 61 is longitudinally inserted into the first fixing hole 43, the third fixing hole 221 and the fourth fixing hole 3111 respectively, and is locked and fixed by the first fastening nut 62; the second anti-drop pin 71 is longitudinally inserted into the second fixing hole 53 and the fifth fixing hole 3112 respectively, and is locked and fixed by the second fastening nut 72. Thus, the first anti-drop assembly 6 is detachably connected between the first hanging member 4, the working platform 2 and the supporting assembly 3, and the second anti-drop assembly 7 is detachably connected between the second hanging member 5 and the supporting assembly 3, and the corresponding stepping cross bar 12 is stopped by the first anti-drop pin 61 and the second anti-drop pin 71 to prevent the hanging member from upwardly detaching from the corresponding stepping cross bar 12, effectively avoiding the safety accident of the platform falling due to the loosening of the hanging member, and having higher safety.

[0089] It can be understood that in some other embodiments, the first anti-slip component 6 and the second anti-slip component 7 can also be connected to the corresponding hanging parts respectively, and are not connected to the working platform 2 and / or the supporting component 3. In this way, the anti-slip pin can be used to stop the stepping cross bar and achieve the limitation of the hanging parts.

[0090] It can be understood that in some other embodiments, the first anti-slip component 6 can also be connected to the first hanging component 4 and the working platform 2 at the same time, and not be connected to the supporting component 3. In this way, the first anti-slip pin 61 can also be used to stop the stepping cross bar and achieve the limitation of the hanging component.

[0091] Preferably, the first anti-dropout pin 61 and the second anti-dropout pin 71 are both made of M8*10 bolts.

[0092] The above are only preferred implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A safety platform suitable for working on a vertical ladder in a nuclear power plant, detachably connected to a vertical ladder (1), characterized in that: The safety platform comprises a working platform (2), a supporting assembly (3), a first hanging component (4), and a second hanging component (5), wherein: The working platform (2) is horizontally fixedly connected to the upper part of the supporting assembly (3); The first hanging member (4) is fixedly connected to the supporting assembly (3) and / or the working platform (2) on a side facing the vertical ladder (1); The second hanging member (5) is fixedly connected to a side of the supporting assembly (3) facing the vertical ladder (1), and the second hanging member (5) is located below the first hanging member (4); The first hanging member (4) and the second hanging member (5) are respectively detachably hung on the upper and lower adjacent or alternate stepping cross bars (12) of the vertical ladder (1) to hang the supporting assembly (3) and the working platform (2) on the vertical ladder (1).

2. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 1, characterized in that: It also includes a first anti-slip component (6) and a second anti-slip component (7), wherein: The first anti-slip assembly (6) is detachably connected between the first hanging member (4) and / or the supporting member (3) and / or the working platform (2), and the first anti-slip assembly (6) is at least partially longitudinally penetrated through the first hanging member (4) and stopped below the corresponding stepping cross bar (12) to limit the first hanging member (4) on the corresponding stepping cross bar (12); The second anti-slip assembly (7) is detachably connected between the second hanging member (5) and / or the supporting member (3), and the second anti-slip assembly (7) is at least partially longitudinally penetrated through the second hanging member (5) and stopped below the corresponding pedal cross bar (12) to limit the second hanging member (5) on the corresponding pedal cross bar (12).

3. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 1, characterized in that: It also comprises a pulling member (8), wherein the pulling member (8) is detachably connected obliquely downward between the vertical ladder (1) and the working platform (2) or / and the supporting assembly (3).

4. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 1, characterized in that: The first hanging member (4) comprises a first top plate (41) and a first side plate (42), wherein the first top plate (41) is horizontally arranged, and the first side plates (42) are vertically fixedly connected to two horizontal sides of the first top plate (41) and extend downward, so that the first hanging member (4) forms a U-shaped groove structure opening downward; The second hanging member (5) comprises a second top plate (51) and a second side plate (52); the second top plate (51) is arranged horizontally and transversely; the second side plates (52) are correspondingly and vertically fixedly connected to two transverse sides of the second top plate (51) and extend downwardly, so that the second hanging member (5) forms a U-shaped groove structure opening downwardly.

5. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 4, characterized in that: The groove depths of the U-shaped groove structures of the first hanging member (4) and the second hanging member (5) are both greater than or equal to the cross-sectional height of the pedal crossbar (12).

6. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 4, characterized in that: The working platform (2) is provided with a folded edge (22) which is bent vertically downward and extends laterally on one side facing the vertical ladder (1); the first side plate (42) corresponding to the first hanging member (4) which is away from the vertical ladder (1) abuts against and is fixedly connected to the folded edge (22).

7. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 1, characterized in that: The support assembly (3) comprises a fixing frame (31), a horizontal support arm (32) and an oblique support arm (33), wherein: The fixing frame (31) is arranged parallel to the vertical ladder (1); There are at least two horizontal support arms (32) which are arranged horizontally and longitudinally opposite to each other. One end of the horizontal support arm (32) facing the vertical ladder (1) is fixedly connected to the upper part of the fixed frame (31), and the working platform (2) is fixedly connected to the horizontal support arm (32); There are at least two oblique support arms (33) which are respectively fixedly connected obliquely upward to the lower part of the fixing frame (31) or / and between the second hanging member (5) and the corresponding horizontal support arm (32) to form support for the working platform (2).

8. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 7, characterized in that: The fixing frame (31) comprises a vertical tube portion (311) and a horizontal tube portion (312), wherein there are at least two vertical tube portions (311) which are arranged vertically opposite to each other, and the horizontal tube portion (312) is laterally fixedly connected between the vertical tube portions (311).

9. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 8, characterized in that: The number of the horizontal support arms (32) and the oblique support arms (33) is matched with the number of the vertical tube portions (311); One end of the horizontal support arm (32) facing the vertical ladder (1) is fixedly connected to the upper end of the corresponding vertical pipe part (311); The oblique support arms (33) are respectively fixedly connected obliquely upward between the lower portion of the corresponding vertical tube portion (311) and the corresponding horizontal support arm (32).

10. The safety platform suitable for working on vertical ladders in nuclear power plants according to claim 7, characterized in that: Each of the horizontal support arms (32) comprises a support top plate (321) and a support side plate (322), wherein the support top plate (321) is arranged horizontally and longitudinally, and the support side plate (322) is vertically fixedly connected to at least one side of the longitudinal direction of the support top plate (321) and extends downward, so that the horizontal support arm (32) forms an inverted L-shaped groove structure or a downwardly open U-shaped groove structure.

Images