Anti-falling self-locking climbing operation ladder

Abstract

An anti-falling self-locking climbing operation ladder comprises a ladder body, the ladder body is a herringbone ladder, an anti-falling mooring device is arranged on the upper portion between two supporting legs of the herringbone ladder, the ladder body and the anti-falling mooring device are connected and fixed together through a lock catch, a locking device is arranged in the middle of the anti-falling mooring device, and the two supporting legs are locked when the herringbone ladder is unfolded. Self-alignment devices are arranged at the bottoms of two supporting legs of the herringbone ladder to adapt to low-lying and uneven ground; the anti-falling mooring device is arranged and is locked and fixed with a safety belt worn by an operator, so that the operator is prevented from falling during climbing operation; a locking device is arranged in the middle of the ladder body, so that the ladder body can be effectively prevented from being folded and toppled in the climbing operation process of an operator, the operation risk caused by the ladder body can be effectively prevented, the operation safety of the operator is further protected, and meanwhile, the ladder is conveniently folded, stored and carried after the operation is completed; and a self-alignment device is arranged at the bottom of the ladder body, so that the device is suitable for uneven ground, and the application range of the operation ladder is further widened.

Description

Technical Field

[0001] The utility model relates to the technical field of ladders, in particular to an anti-falling self-locking high-altitude working ladder. Background Art

[0002] With the popularization and large-scale construction of tall flat warehouses and silos, the daily maintenance workload of equipment and facilities is increasing day by day, resulting in a synchronous increase in the high-altitude working volume in the storage area. However, the current high-altitude working ladders have a single anti-falling function, no locking or mooring devices, and cannot self-align. Usually, the problem of uneven ground is solved by stuffing pads, which is time-consuming and laborious, and has a high safety risk, and cannot meet the safety management requirements of high-altitude operations, making the safety situation of high-altitude operations increasingly severe.

[0003] Previously, there were cases of upgrading and improving working ladders. For example, CN2830626Y discloses a self-locking safety folding ladder, which is composed of two straight ladder bodies connected by a connecting piece. The straight ladder body is composed of two ladder rods respectively connected with a number of pedals at intervals. The connecting piece is composed of a left connecting pair and a right connecting pair connected by a hinge. Its characteristics are: the left connecting pair and the right connecting pair are respectively provided with symmetrically arranged "乁"-shaped locking holes and "厂"-shaped locking holes. A locking shaft passes through the locking holes of the left connecting pair and the right connecting pair. The two ends of the locking shaft are provided with big head caps. A plastic bushing is arranged between the pedals and the ladder rods of the straight ladder body, and the plastic sleeve is provided with a ladder rod groove; the locking device of this utility model has relatively complex openings and is not firmly locked. The plastic bushing at the bottom protects the ladder, but does not have an aligning function. In addition, the problem of high-altitude falling of operators is not considered.

[0004] Subsequently, other technical problems emerged. For example, CN208416430U discloses a supporting foot for a folding ladder. The upper end of the bottom box is open, the bottom of the middle box is inserted into the bottom box, and an upper box is arranged inside the middle box. A plurality of springs are arranged inside the bottom box. The lower ends of the springs are welded to the bottom end surface inside the bottom box, and the upper ends of the springs are connected to the bottom end of the middle box. The springs are compression springs. A convex ring extending outward is arranged at the bottom end of the middle box, and convex blocks extending inward are arranged on both sides of the top end of the bottom box. The convex ring is located below the convex blocks. A rotating seat is welded to the middle of the right side of the top end of the upper box; this utility model takes into account the problem of bottom alignment, but has a relatively complex structure, is not suitable for the smooth ground of grain storage warehouses, and does not consider the risk of personnel falling during high-altitude operations.

[0005] Therefore, our company specifically conducts a comprehensive analysis of the risk points of operators' high-altitude operations and designs an anti-falling self-locking high-altitude working ladder. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a fall-proof self-locking climbing work ladder to solve the problems that the existing climbing work ladders have single functions, no anti-fall protection for climbing work, no locking function for ladder deployment, and no adaptive alignment function for uneven bottom surfaces.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fall-proof self-locking climbing work ladder, including a ladder body, the ladder body is a herringbone ladder, an anti-fall mooring device is arranged on the upper part between the two legs of the herringbone ladder, the anti-fall mooring device connects and fixes the ladder body and the anti-fall mooring device together through a lock, a locking device is arranged in the middle part, the two legs are locked when the herringbone ladder is opened, and self-aligning devices are arranged at the bottom of the two legs of the herringbone ladder to adapt to the low and uneven ground.

[0008] In a preferred solution, the ladder body is a herringbone ladder, including a group of straight ladders, and the tops of the group of straight ladders are hinged together by hinges.

[0009] In a preferred solution, the straight ladder includes a group of ladder bars, a plurality of pedals are arranged between the ladder bars, a top plate is arranged on the top of the ladder bars, and the group of ladder bars are fixed together by hinges on the inner side of the top plate at the top of the ladder bars.

[0010] In a preferred solution, a lifting ring is provided at the bottom of the top plate, and the locking buckle is installed on two lifting rings of a set of vertical ladders, and then connected and fixed together with the anti-falling mooring device.

[0011] In a preferred embodiment, the anti-falling mooring device includes a fall arrester, a locking ring is installed on the upper end of the fall arrester, the upper locking ring is locked with a lifting ring through a locking buckle, and a safety locking buckle is installed at the lower end of the fall arrester, which is locked with a safety belt worn by the operator.

[0012] In a preferred solution, locking devices are hinged on both sides of the set of ladder rods. The locking devices include a set of support rods hinged together. The support rods are opened and straightened to fix the two legs of the stepladder.

[0013] In a preferred embodiment, a hole is provided on the external support rod, a spring plunger is installed in the hole, the internal support rod and the external support rod are leveled to form a straight line, and a hole is provided at a position corresponding to the spring plunger installation position of the external support rod.

[0014] In a preferred solution, the spring plunger includes a shell, a first spring is fixed inside the shell, a bead column is fixed above the first spring, the bead column is a solid part of the upper hemisphere of the lower cylinder, and the bead column is fixed in the hole of the external support rod.

[0015] In a preferred embodiment, a self-aligning device is provided at the bottom of each of the group of ladder rods, the self-aligning device comprises a protective cover sleeved on the bottom of the ladder rod, a second spring is installed inside the protective cover, one end of the second spring is fixed to the bottom of the ladder rod, and the other end is supported on the bottom surface inside the protective cover.

[0016] In a preferred solution, the ladder rod and the protective cover are tightly inserted and fixed together, and the second spring is a disc spring, one end of which is fixed to the bottom of the ladder rod and the other end is supported on the bottom surface inside the protective cover.

[0017] The utility model provides an anti-falling self-locking climbing work ladder, which has the following beneficial effects:

[0018] 1. The utility model solves the problems of the existing climbing work ladder with single function, no anti-fall protection for climbing work, no locking when the work ladder is unfolded, and no adaptive alignment function for uneven bottom surface. It realizes the adaptive ground alignment, unfolding self-locking of the climbing work ladder, and the function of preventing workers from falling from high altitude during climbing work;

[0019] 2. The utility model is provided with an anti-falling retention device, which is locked with the safety belt worn by the operator to prevent the operator from falling when working at height, thereby effectively protecting the safety of the operator;

[0020] 3. The utility model provides a locking device in the middle of the ladder body, which can effectively prevent the ladder body from being folded and tipped over during the operation of the operator, thereby further protecting the operator's operating safety and facilitating folding, storage and transportation after the operation is completed;

[0021] 4. A self-aligning device is provided at the bottom of the ladder body of the utility model, so that the device is suitable for uneven ground, further improving the application scope and practicality of the work ladder, saving alignment and installation time, and effectively improving work efficiency;

[0022] 5. The utility model effectively utilizes the existing high-altitude work ladder, upgrades and improves it on the basis of the existing high-altitude work ladder, solves the operational risks and safety problems of the existing high-altitude work ladder, and at the same time has a simple structure, small transformation workload, low cost, and is safe and reliable. After practical use, it can be promoted within the group, with good promotability and high practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0024] Figure 1 It is a front view of the overall structure of the utility model;

[0025] Figure 2 It is the first axonometric drawing of the overall structure of the utility model;

[0026] Figure 3 It is a second axonometric drawing of the overall structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the locking device of the utility model;

[0028] Figure 5 It is a partial cross-sectional view of the locking device of the ladder body in the folded state of the utility model;

[0029] Figure 6 It is a partial cross-sectional view of the ladder body of the utility model in the locked state of the locking device;

[0030] Figure 7 This is a schematic diagram of the structure of the spring plunger of the utility model;

[0031] Figure 8 This is a structural schematic diagram of the self-aligning device of the utility model;

[0032] In the figure: ladder body 1, anti-falling mooring device 2, lock 3, locking device 4, self-aligning device 5, straight ladder 11, hinge 12, anti-falling device 21, locking ring 22, safety lock 23, support rod 41, spring plunger 42, protective cover 51, second spring 52, ladder rod 111, pedal 112, top plate 113, lifting ring 114, shell 421, first spring 422, bead column 423. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0034] like Figures 1 to 8 As shown, a fall-proof self-locking climbing work ladder comprises a ladder body 1. The ladder body 1 is a herringbone ladder. An anti-fall mooring device 2 is arranged at the upper part between the two legs of the herringbone ladder. The anti-fall mooring device 2 connects and fixes the ladder body 1 and the anti-fall mooring device 2 together through a lock buckle 3. A locking device 4 is arranged in the middle part to lock the two legs when the herringbone ladder is opened. Self-aligning devices 5 are arranged at the bottom of the two legs of the herringbone ladder to adapt to the low and uneven ground.

[0035] In this embodiment, the ladder body 1 is a herringbone ladder, including a group of straight ladders 11 , and the tops of the group of straight ladders 11 are hinged together by hinges 12 .

[0036] Furthermore, the straight ladder 11 includes a group of ladder rods 111, a plurality of pedals 112 are arranged between the ladder rods 111, a top plate 113 is arranged on the top of the ladder rods 111, and the group of ladder rods 111 are installed and fixed together by hinges 12 on the inner side of the top plate 113 at the top thereof.

[0037] Furthermore, a lifting ring 114 is provided at the bottom of the top plate 113 , and the lock buckle 3 is installed on two lifting rings 114 of a set of vertical ladders 11 , and then connected and fixed together with the anti-falling mooring device 2 .

[0038] Furthermore, the anti-falling mooring device 2 includes a fall arrester 21, a locking ring 22 is installed on the upper end of the fall arrester 21, the upper locking ring 22 is locked with the lifting ring 114 through the locking buckle 3, and a safety locking buckle 23 is installed at the lower end of the fall arrester 21, and the safety locking buckle 23 is locked with the safety belt worn by the operator.

[0039] Furthermore, the two sides of the group of ladder rods 111 are hinged with locking devices 4, and the locking devices 4 include a group of support rods 41 hinged together. The support rods 41 are opened and straightened to fix the two legs of the ladder.

[0040] Furthermore, a hole is provided on the external support rod 41, a spring plunger 42 is installed in the hole, the internal support rod 41 and the external support rod 41 are leveled to form a straight line, and a hole is provided at a corresponding position of the external support rod 41 where the spring plunger 42 is installed.

[0041] Furthermore, the spring plunger 42 includes a shell 421 , a first spring 422 is fixed inside the shell 421 , a bead column 423 is fixed above the first spring 422 , the bead column 423 is a solid part of the upper hemisphere of the lower cylinder, and the bead column 423 is fixed in the hole of the external support rod 41 .

[0042] Furthermore, a self-aligning device 5 is provided at the bottom of the group of ladder rods 111, and the self-aligning device 5 includes a protective cover 51 which is sleeved on the bottom of the ladder rod 111, and a second spring 52 is installed inside the protective cover 51. One end of the second spring 52 is fixed to the bottom of the ladder rod 111, and the other end is supported on the bottom surface inside the protective cover 51.

[0043] Furthermore, the ladder rod 111 and the protective cover 51 are tightly inserted and fixed together, and the second spring 52 is a disc spring, one end of the disc spring is fixed to the bottom of the ladder rod 111, and the other end is supported on the bottom surface inside the protective cover 51. The outer dimensions of the disc spring are the same as those of the ladder rod 111 of the ladder body 1, and the outer shape of the ladder rod 111 is tightly fitted with the inner cavity of the protective cover 51.

[0044] When using it specifically: according to the requirements of the working area, choose a suitable herringbone ladder, and pass a group of herringbone ladders 114 through the lock buckle 3 at the bottom of the top plate 113 of the ladder body 1, and fix the ladder body 1 and the lock ring 22 at the end of the fall arrester 21 together, and install the safety lock buckle 23 at the other end; after the installation is completed, install the locking device 4 at a suitable position in the middle of the ladder body to ensure that when the spring plunger 42 is compressed, the inner and outer support rods 41 are freely closed, and when the spring plunger 42 pops out, it can smoothly enter the hole of the internal support rod 41 to lock the two legs of the herringbone ladder; install a fixed disc spring at the bottom of the ladder rod 111 of the ladder body 11, and then install the protective cover 51 so that the protective cover 51 is in close contact with the ladder rod 111; after the installation and debugging of each component are qualified, move the work ladder to the working area, first open the two legs of the herringbone ladder, and after the two groups of support rods 41 of the locking device 4 are opened and straightened and locked with the spring plunger 42, the self-aligning device 5 at the bottom of the ladder body 1 is initially After the working ladder is aligned and ensured to be laid and locked firmly, the operator wears the safety belt and climbs up the safety ladder. The weight of the operator makes the working ladder adapt to the uneven ground, keeps the balance of the operator, fixes the safety belt with the anti-falling mooring device 2 through the safety lock buckle 23, and starts working; when the operator is at risk of falling, the anti-falling device 21 will lock the operator through the safety belt until the operator holds the working ladder again and returns to a safe state; when the work is completed, the operator returns to the ground from the working ladder, presses the bead column 423 of the spring plunger 42 to compress its first spring 422, so that the spring plunger 42 is disengaged from the hole of the internal support rod 41, closes and stores the two legs of the ladder body 1 together, and carries it to the next area where construction is required, repeatedly opens the herringbone ladder, locks the locking device 4, and preliminarily aligns the self-aligning device 5. The operator climbs up the working ladder, and after the safety belt is fixed with the anti-falling mooring device 2, starts working, and so on.

[0045] In a preferred embodiment, the ladder body 1 is a herringbone ladder, including a group of straight ladders 11, and the tops of the group of straight ladders 11 are hinged together by hinges 12; the above arrangement realizes the working function of the herringbone ladder and ensures the stability of high-altitude operations.

[0046] In a preferred embodiment, the straight ladder 11 includes a group of ladder rods 111, a plurality of pedals 112 are arranged between the ladder rods 111, a top plate 113 is arranged on the top of the ladder rods 111, and a group of ladder rods 111 are installed and fixed together by hinges 12 on the inner side of the top plate 113 at the top of the ladder rods 111; the above arrangement enables the functions of unfolding the ladder, closing it for storage and carrying to be realized, and the operation of the top pedal makes it convenient for operators to lean on it for climbing operations and placing work tools.

[0047] In the preferred embodiment, a lifting ring 114 is provided at the bottom of the top plate 113, and the lock buckle 3 is installed on two lifting rings 114 of a set of straight ladders 11, and then connected and fixed together with the anti-falling mooring device 2; the above arrangement enables the ladder body 1 and the anti-falling mooring device 2 to be connected and fixed together.

[0048] In the preferred scheme, the anti-falling mooring device 2 includes a fall arrester 21, a locking ring 22 is installed on the upper end of the fall arrester 21, the upper locking ring 22 is locked with the lifting ring 114 through the locking buckle 3, and a safety locking buckle 23 is installed at the lower end of the fall arrester 21, and the safety locking buckle 23 is locked with the safety belt worn by the operator; the above settings enable the function of the anti-falling mooring device 2 to be realized, effectively protect the safety of the height workers, thereby further improving the safety and stability of the operation.

[0049] In a preferred solution, the two sides of the group of ladder rods 111 are hinged with locking devices 4, and the locking devices 4 include a group of support rods 41 hinged together. The support rods 41 are opened and straightened to fix the two legs of the stepladder. With the above arrangement, the locking device 4 is effectively connected and fixed to the ladder body 1, and its function is realized.

[0050] In the preferred embodiment, a hole is provided on the external support rod 41, a spring plunger 42 is installed in the hole, the internal support rod 41 and the external support rod 41 are leveled to form a straight line, and a hole is provided at a corresponding position of the external support rod 41 where the spring plunger 42 is installed; the above arrangement enables the function of the locking device 4 to be realized. When opened, the spring plunger 42 installed on the external support rod 41 enters the hole of the internal support rod 41 to be locked, and the compressed spring plunger 42 slides out of the hole to be unlocked, and the ladder body 11 can be closed for easy storage and carrying.

[0051] In the preferred embodiment, the spring plunger 42 includes a shell 421, a first spring 422 is fixed inside the shell 421, a bead column 423 is fixed above the first spring 422, the bead column 423 is a solid part of the upper hemisphere of the lower cylinder, and the bead column 423 is fixed in the hole of the external support rod 41; the above arrangement enables the function of the spring plunger 42 to be realized, and it can slide out of the hole to be unlocked when compressed, and enter the hole of the inner support rod 41 to be locked when popped out.

[0052] In a preferred solution, a self-aligning device 5 is provided at the bottom of each group of ladder rods 111. The self-aligning device 5 includes a protective cover 51 which is sleeved on the bottom of the ladder rod 111. A second spring 52 is installed inside the protective cover 51. One end of the second spring 52 is fixed to the bottom of the ladder rod 111, and the other end is supported on the bottom surface of the protective cover 51. The above arrangement enables the function of the self-aligning device 5 to be realized, making the work ladder more applicable and more practical.

[0053] In the preferred embodiment, the ladder rod 111 and the protective cover 51 are tightly inserted and fixed together, and the second spring 52 is a disc spring, one end of the disc spring is fixed to the bottom of the ladder rod 111, and the other end is supported on the bottom surface inside the protective cover 51; the above arrangement enables the work ladder to self-align according to uneven places while maintaining stability, thereby further improving the safety and reliability of the work ladder.

[0054] In summary, the utility model provides a fall-proof self-locking climbing work ladder, which solves the problems of the existing climbing work ladder with single function, no anti-fall protection for climbing work, no locking when the work ladder is unfolded, and no adaptive alignment function for uneven bottom surfaces, and realizes the functions of adaptive ground alignment, self-locking when unfolded, and preventing workers from falling from heights during climbing work; by setting up an anti-fall mooring device 2, it is locked with the safety belt worn by the workers to prevent the workers from falling during climbing work, thereby effectively protecting the safety of the workers; a locking device 4 is set in the middle of the ladder body, which can effectively prevent the ladder body 1 from closing and tipping over during the workers' climbing work, thereby preventing the work risks caused by the operation. , thereby further protecting the operating safety of the operators, and at the same time facilitating folding, storage and transportation after the operation is completed; a self-aligning device 5 is arranged at the bottom of the ladder body 1, so that the device can be applied to uneven ground, further improving the application scope and practicality of the work ladder, saving alignment and installation time, and effectively improving the working efficiency; the utility model effectively utilizes the existing high-altitude work ladder, upgrades and improves it on the basis of the existing high-altitude work ladder, solves the operating risks and safety problems of the existing high-altitude work ladder, and at the same time has a simple structure, small transformation workload, low cost, and is safe and reliable. After practical use, it can be promoted within the group, with good promotion, high practical application value, and good economic and social benefits.

Claims

1. A fall-proof self-locking climbing work ladder, comprising a ladder body (1), characterized in that: The ladder body (1) is a herringbone ladder. An anti-falling mooring device (2) is arranged at the upper part between two legs of the ladder. The anti-falling mooring device (2) connects and fixes the ladder body (1) and the anti-falling mooring device (2) together through a lock buckle (3). A locking device (4) is arranged in the middle part to lock the two legs when the ladder is opened. Self-aligning devices (5) are arranged at the bottom of the two legs of the ladder to adapt to the low and uneven ground.

2. The anti-fall self-locking climbing work ladder according to claim 1, characterized in that: The ladder body (1) is a herringbone ladder, comprising a group of straight ladders (11), wherein the tops of the group of straight ladders (11) are hinged together via hinges (12).

3. The anti-fall self-locking climbing work ladder according to claim 2, characterized in that: The straight ladder (11) comprises a group of ladder bars (111), a plurality of pedals (112) are arranged between the ladder bars (111), a top plate (113) is arranged on the top of the ladder bars (111), and the group of ladder bars (111) are installed and fixed together through hinges (12) on the inner side of the top plate (113) at the top of the ladder bars (111).

4. The anti-fall self-locking climbing work ladder according to claim 3 is characterized in that: A lifting ring (114) is provided at the bottom of the top plate (113), and the lock buckle (3) is installed on two lifting rings (114) of a set of vertical ladders (11), and then connected and fixed with the anti-falling mooring device (2).

5. The anti-fall self-locking climbing work ladder according to claim 4, characterized in that: The anti-fall mooring device (2) comprises an anti-fall device (21), a locking ring (22) is installed at the upper end of the anti-fall device (21), the upper locking ring (22) is locked with the lifting ring (114) through a locking buckle (3), and a safety locking buckle (23) is installed at the lower end of the anti-fall device (21), and the safety locking buckle (23) is locked with a safety belt worn by the operator.

6. The anti-fall self-locking climbing work ladder according to claim 4, characterized in that: The two sides of the group of ladder rods (111) are hinged with locking devices (4), and the locking devices (4) include a group of support rods (41) hinged together. The support rods (41) are opened and straightened to fix the two legs of the ladder.

7. The anti-fall self-locking climbing work ladder according to claim 6, characterized in that: The external support rod (41) is provided with a hole, in which a spring plunger (42) is installed; the internal support rod (41) and the external support rod (41) are aligned to form a straight line, and a hole is provided at a position corresponding to the installation position of the spring plunger (42) of the external support rod (41).

8. The anti-fall self-locking climbing work ladder according to claim 7, characterized in that: The spring plunger (42) comprises a housing (421), a first spring (422) being fixed inside the housing (421), a bead column (423) being fixed above the first spring (422), the bead column (423) being a solid part of the upper hemisphere of the lower cylinder, and the bead column (423) being fixed in the hole of the external support rod (41).

9. The anti-fall self-locking climbing work ladder according to claim 3, characterized in that: The bottom of each of the group of ladder bars (111) is provided with a self-aligning device (5), the self-aligning device (5) comprising a protective sleeve (51) sleeved on the bottom of the ladder bar (111), a second spring (52) being installed inside the protective sleeve (51), one end of the second spring (52) being fixed to the bottom of the ladder bar (111), and the other end being supported on the bottom surface inside the protective sleeve (51).

10. The anti-fall self-locking climbing work ladder according to claim 9, characterized in that: The ladder rod (111) and the protective cover (51) are closely inserted and fixed together, and the second spring (52) is a disc spring, one end of which is fixed to the bottom of the ladder rod (111) and the other end is supported on the bottom surface inside the protective cover (51).

Images