Anti-falling ladder stand for granary
By installing fall arrestors and safety nets on the grain silo climbing ladder, the problems of time-consuming, labor-intensive, and injury-risk issues in the existing climbing mode have been solved, achieving safe and efficient climbing protection.
Patent Information
- Application Number
- CN202520584595.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Climbing the existing grain silos is time-consuming and laborious, and there is a risk of injury from collisions with the ladder if one's hands or feet slip.
A fall-prevention ladder for grain storage has been designed, including a cage, a ladder body, a fall-prevention self-locking device, and a safety net. The fall-prevention self-locking device and the ladder body are located on opposite sides of the cage. When workers slip or fall, they move away from the ladder body and come into contact with the safety net, forming a double protection mechanism.
It saves time and effort, reduces physical exertion during climbing, and greatly reduces the probability of injury through the combination of protective netting and fall arrestor.
Smart Images
Figure CN223964423U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of grain depot maintenance technology, specifically to a grain depot anti-fall ladder. Background Technology
[0002] Grain storage systems contain numerous square and tall square warehouses. To facilitate maintenance or installation work on the rooftops, these large warehouses are equipped with ladders for workers to climb. These ladders typically range in height from a few meters to tens of meters above the ground. According to relevant regulations, work exceeding 2 meters in height is defined as working at height. Therefore, improving the safety of workers climbing warehouse roofs is a critical issue. Ensuring that workers do not fall from the ladders or suffer serious injury in the event of a fall is of paramount importance.
[0003] Currently, there is no adequate safety measure in place for ladder climbing. Workers need to use two safety ropes attached to their safety harnesses to ascend alternately, which consumes a significant amount of time and energy just for the climb itself. If a worker slips or falls during the climb, their body will impact the ladder due to inertia, potentially causing serious injury. Utility Model Content
[0004] The purpose of this application is to provide a fall-prevention ladder for grain warehouses, which solves the problems of existing climbing methods being time-consuming and laborious, and workers being easily injured by colliding with the ladder after their hands or feet slip.
[0005] This application is achieved through the following technical solution:
[0006] A fall-prevention ladder for grain silos includes:
[0007] Cage;
[0008] The ladder body is connected to the protective cage.
[0009] A fall arrestor is provided, which is connected to the cage and located at one end of the cage along its length. From the perspective of the cage's length, the fall arrestor and the ladder body are located on opposite sides of the cage.
[0010] A protective net is connected to the protective cage and located inside the protective cage.
[0011] In some alternative embodiments, in the length direction of the ladder body, the distance between the end of the ladder body away from the fall arrestor and the protective net is no more than 2m.
[0012] In some alternative embodiments, the ladder body includes:
[0013] At least two ladder beams, all of which are arranged in parallel and spaced apart, with one end of each ladder beam constructed as a curved structure;
[0014] A set of treads, wherein multiple treads are connected to a ladder beam and are spaced apart along the length of the ladder beam;
[0015] Fixed plates, a plurality of the fixed plates are connected to the ladder beam and are used to connect and fix the facilities.
[0016] In some optional embodiments, a partition is movably connected to one end of the ladder body away from the fall arrestor, and a lock is disposed between the partition and the ladder body, wherein the length of the partition is greater than the distance between the two steps in the longitudinal direction of the ladder body.
[0017] In some alternative embodiments, the cage includes:
[0018] Arc-shaped enclosure, with multiple arc-shaped enclosures connected to the main body of the ladder and arranged at intervals to form a semi-enclosure around the main body of the ladder;
[0019] A reinforcing rib is provided, which is connected to the arc-shaped enclosure and is parallel to the length direction of the ladder body.
[0020] In some alternative embodiments, there is a gap between the protective net and the protective cage.
[0021] In some alternative embodiments, along the length of the ladder body, the protective net is connected to the cage via a flexible cable at the end near the fall arrestor.
[0022] In some optional embodiments, the fall arrestor is connected to the cage via a connecting bracket, the connecting bracket comprising:
[0023] The crossbeam, on which the fall arrestor is connected;
[0024] A first limiting member is movably connected to the crossbeam to move along the length of the crossbeam.
[0025] The second limiting member is movably connected to the crossbeam to move along the length of the crossbeam.
[0026] The first supporting diagonal bar is connected at both ends to the crossbeam and the protective cage, respectively.
[0027] In some alternative embodiments, the crossbeam is also connected to the ladder body via a second supporting diagonal rib.
[0028] In some optional embodiments, the fall arrestor includes:
[0029] The self-locking device body is connected to the protective cage;
[0030] A safety ring, wherein the safety ring is connected to the free end of the steel rope of the self-locking device body;
[0031] A pull rope is connected to the safety ring, wherein the length of the pull rope is not less than the length of the safety cage along the length of the ladder body.
[0032] Compared with the prior art, this application has the following advantages and beneficial effects:
[0033] The grain warehouse fall-prevention ladder provided in this application, through the setting of a fall-prevention self-locking device, can protect workers from falls. Compared with the existing climbing mode, it no longer requires two safety ropes to ascend alternately, saving time and effort. At the same time, the relative position design of the fall-prevention self-locking device and the ladder body ensures that if the worker's hand or foot slips, they will be away from the ladder body and will not collide with it, but will instead come into contact with the safety net. This, together with the fall-prevention self-locking device, forms a double protection mechanism. The safety net has smaller holes, making it less likely for workers to trip and greatly reducing the probability of injury. Attached Figure Description
[0034] The accompanying drawings, which are included to provide a further understanding of the embodiments of this application and form part of this application, do not constitute a limitation on the embodiments of this application. In the drawings:
[0035] Figure 1 This is a simplified front view of the anti-fall ladder structure for grain silos provided in an embodiment of this application;
[0036] Figure 2 This is a simplified side view of the grain silo fall-prevention ladder provided in an embodiment of this application.
[0037] Figure 3 This is a simplified side view of the grain silo fall-prevention ladder provided in this application embodiment.
[0038] Figure 4 This is a schematic diagram of the main structure of the ladder provided in an embodiment of this application;
[0039] Figure 5 A simplified top view of the grain silo fall-prevention ladder provided in this application embodiment;
[0040] Figure 6 This is a schematic diagram of a simplified installation structure for a fall arrestor provided in an embodiment of this application.
[0041] The attached diagram shows the markings and corresponding component names:
[0042] 1-Climbing ladder body, 11-Ladder beam, 12-Step, 13-Fixing plate, 2-Partition, 3-Cage, 31-Arc-shaped enclosure, 32-Reinforcing rib, 4-Fall-proof self-locking device, 41-Crossbeam, 42-Self-locking device body, 43-First limiting component, 44-Second limiting component, 45-Safety ring, 46-Pull rope, 47-First supporting diagonal rib, 48-Second supporting diagonal rib, 5-Safety net, 6-Flexible cable. Detailed Implementation
[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.
[0044] like Figures 1-3 As shown in the embodiment of this application, a fall-prevention ladder for grain storage is provided. The fall-prevention ladder for grain storage includes a cage 3, a ladder body 1, a fall-prevention self-locking device 4, and a protective net 5. The cage 3 is an arc-shaped frame structure. The cage 3 can be formed by rolling up a rectangular frame. The length of the rectangular frame is the length of the cage 3. The sum of the width of the rectangular frame and the width of the ladder body 1 is the perimeter of the cross-section of the space enclosed by the cage 3 and the ladder body 1. That is to say, the cage 3 and the ladder together enclose a relatively closed passage. The fall-prevention self-locking device 4 is connected to the cage 3 and is located at one end of the length direction of the cage 3. From the perspective of the length direction of the cage 3, the fall-prevention self-locking device 4 and the ladder body 1 are located on opposite sides of the cage 3. For example, the fall-prevention self-locking device 4 is located on the left side of the cage 3 and the ladder body 1 is located on the right side of the cage 3. The protective net 5 is connected to the cage 3 and is located inside the cage 3.
[0045] In use, connect the main body 1 of the climbing ladder to other fixed facilities in the site, connect the fall arrestor 4 to the safety belt on the worker's work clothes, and the worker begins to climb the main body 1 of the climbing ladder and enters the cage 3 from one end along the length of the cage 3. If the worker's hand or foot slips, because the fall arrestor 4 and the main body 1 of the climbing ladder are located on opposite sides of the cage 3, the worker will move away from the main body 1 of the climbing ladder and come into contact with the safety net 5 without external interference.
[0046] In this embodiment, the fall arrestor 4 provides fall protection for workers. Compared to existing climbing methods, it eliminates the need for two safety ropes to ascend alternately. Climbing can begin simply by connecting the fall arrestor 4 to the safety belt on the work clothes. Furthermore, no further operation of the fall arrestor 4 or safety belt is required during the climb, saving time and effort. The relative position design between the fall arrestor 4 and the ladder body 1 ensures that if workers slip, they will move away from the ladder body 1 and avoid colliding with it. Instead, they will come into contact with the safety net 5, thus forming a double protection mechanism together with the fall arrestor 4. The safety net 5 provides smaller holes, making it less likely for workers to trip and greatly reducing the probability of injury.
[0047] In some optional embodiments, along the length of the ladder body 1, the distance between the end of the ladder body 1 away from the fall arrestor 4 and the protective net 5 is no more than 2m; that is, the worker can be protected by the protective net 5 after climbing up to 2m, which fully ensures the worker's work safety.
[0048] In some optional embodiments, see also Figures 2-4 The ladder body 1 includes ladder beams 11, steps 12, and fixing plates 13. There are at least two ladder beams 11. Typically, two ladder beams 11 are configured to save materials and reduce manufacturing costs while meeting load-bearing requirements. The two ladder beams 11 are arranged parallel and spaced apart. One end of each ladder beam 11 is constructed as a curved structure, allowing workers to continuously grip different parts of the curved structure as their feet leave the ladder body 1 after climbing to the top, similar to a swimming pool handrail. The difference in this embodiment is that the curved structure is not connected to other fixed facilities. Multiple steps 12 are connected to the ladder beams 11 and arranged at intervals along the length of the ladder beams 11. The steps 12 are for workers to step on; the plate-like structure provides a larger stepping area, improving ease of use. Multiple fixing plates 13 are connected to the ladder beams 11 and used to connect to fixed facilities, allowing workers to easily connect the entire fall-prevention ladder to other fixed facilities. Multiple bolt holes can be provided on the fixing plates 13, allowing them to be connected to other fixed facilities via multiple bolts.
[0049] In some alternative embodiments, see [reference]. Figures 1-3A partition 2 is movably connected to one end of the ladder body 1 away from the fall arrestor 4. A lock is provided between the partition 2 and the ladder body 1, thereby restricting the movement of the partition 2 on the ladder body 1. After the lock is opened, the partition 2 can move freely on the ladder body 1. In the length direction of the ladder body 1, the length of the partition 2 is greater than the distance between the two footplates 12. The distance between the two footplates 12 is basically the limit of human body crossing. Therefore, locking the partition 2 can prevent unauthorized personnel from climbing it.
[0050] In some alternative embodiments, see [reference]. Figure 2 and Figure 3 The cage 3 includes arc-shaped enclosures 31 and reinforcing ribs 32; multiple arc-shaped enclosures 31 are connected to the ladder body 1 and arranged at intervals to form a semi-enclosure of the ladder body 1. For example, the two ends of the arc-shaped enclosures 31 are connected to two ladder beams 11 respectively, and the plane of the arc-shaped enclosures 31 is perpendicular to the length direction of the ladder beams 11; the reinforcing ribs 32 are connected to the arc-shaped enclosures 31 and are parallel to the length direction of the ladder body 1. Multiple reinforcing ribs 32 can be set as needed, and the reinforcing ribs 32 and the arc-shaped enclosures 31 can be welded to ensure structural stability.
[0051] In some optional embodiments, there is a gap between the protective net 5 and the cage 3. When the worker comes into contact with the protective net 5, there is a certain initial velocity. The protective net 5 has a certain degree of flexibility. The setting of this gap can provide a certain space for the deformation of the protective net 5, thereby enabling the protective net 5 to provide a certain buffer and to a certain extent prevent the worker from directly colliding with the cage 3, further ensuring the safety of the worker's work.
[0052] In some alternative embodiments, such as Figure 5 As shown, along the length of the ladder body 1, the end of the safety net 5 near the fall arrestor 4 is connected to the cage 3 via a flexible cable 6. In actual implementation, the end of the safety net 5 away from the fall arrestor 4 can be welded to the cage 3 via, for example, a stiffening strip to maintain a gap between the safety net 5 and the cage 3. The other end is connected to the cage 3 via the flexible cable 6. When workers grab the safety net 5 to stabilize their body, the flexible cable 6 can provide a certain amount of cushioning to avoid significant impact on the hands during the grabbing process.
[0053] In some optional embodiments, see also Figure 2 , Figure 3 and Figure 6The fall arrestor 4 is connected to the cage 3 via a connecting bracket. The connecting bracket includes a crossbeam 41, a first limiting member 43, a second limiting member 44, and a first supporting diagonal rib 47. The fall arrestor 4 is connected to the crossbeam 41. The fall arrestor 4 can be fitted onto the crossbeam 41, for example, by providing a base with through holes adapted to the crossbeam 41, allowing the position of the fall arrestor 4 on the crossbeam 41 to be adjustable. The first limiting member 43 is movably connected to the crossbeam 41 to move along the length of the crossbeam 41. The first limiting member 43 is a plate-like component, fitted onto the crossbeam 41 and threadedly connected to it. Rotating the first limiting member 43 changes its position along the length of the crossbeam 41. The second limiting member 44 is movably connected to the crossbeam 41 to move along the length of the crossbeam 41. The beam 41 is movable along its length. The second limiting member 44 is also a plate-shaped component. The second limiting member 44 is sleeved on the beam 41 and threadedly connected to the beam 41. By rotating the second limiting member 44, the position of the second limiting member 44 along the length of the beam 41 can be changed. A clamping gap is formed between the first limiting member 43 and the second limiting member 44. By changing the distance between the first limiting member 43 and the second limiting member 44, the fall arrestor 4 can be clamped, thereby preventing the fall arrestor 4 from moving left or right. By adjusting the position of the first limiting member 43 and the second limiting member 44, the position of the fall arrestor 4 on the beam 41 can be adjusted. The two ends of the first supporting diagonal ribs 47 are respectively connected to the beam 41 and the cage 3. One end of each of the two first supporting diagonal ribs 47 can be welded to both ends of the beam 41, and the other end of each of the two first supporting diagonal ribs 47 can be welded to the cage 3.
[0054] In some optional embodiments, when the first limiting member 43 and the second limiting member 44 are threadedly connected to the crossbeam 41, rotating the first limiting member 43 or the second limiting member 44 to clamp will cause mutual wear with the fall arrestor 4. To avoid this problem, the first limiting member 43 and the second limiting member 44 are movably sleeved on the crossbeam 41, and the threaded section on the crossbeam 41 is equipped with a nut. By rotating the nut, the first limiting member 43 or the second limiting member 44 is pressed against the fall arrestor 4.
[0055] In some alternative embodiments, the crossbeam 41 is also connected to the ladder body 1 via a second supporting diagonal rib 48. This arrangement can further ensure the stability of the fall arrestor 4 and ensure that it provides stable protection for workers.
[0056] In some optional embodiments, the fall arrestor 4 includes a self-locking device body 42, a safety ring 45, and a pull rope 46. The self-locking device body 42 is connected to the cage 3. As described above, the self-locking device body 42 can be connected to the crossbeam 41 after being configured with a base. The safety ring 45 is connected to the free end of the steel rope of the self-locking device body 42. The pull rope 46 is connected to the safety ring 45. In the length direction of the ladder body 1, the length of the pull rope 46 is not less than the length of the cage 3. That is, in the working state, when the safety ring 45 is at the top, the free end of the pull rope 46 is located below the cage 3. Thus, the worker can pull down the safety ring 45 by pulling the pull rope 46. After connecting the safety ring 45 to the safety belt on the work clothes, climbing can be carried out. The operation is convenient, and there is no need to repeatedly adjust the safety belt during the climbing process, saving time and effort.
[0057] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0058] It should be noted that in this specification, similar reference numerals and letters in the above figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this application, it should be noted that unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0059] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A fall-prevention ladder for grain storage, characterized in that, include: Cage (3); The ladder body (1) is connected to the cage (3); Fall arrestor (4), the fall arrestor (4) is connected to the cage (3) and located at one end of the cage (3) in the length direction. In the view of the cage (3) in the length direction, the fall arrestor (4) and the ladder body (1) are located on opposite sides of the cage (3). A protective net (5) is connected to the protective cage (3) and located inside the protective cage (3).
2. The grain silo fall-prevention ladder according to claim 1, characterized in that, Along the length of the ladder body (1), the distance between the end of the ladder body (1) away from the fall arrestor (4) and the protective net (5) is no more than 2m.
3. The grain silo fall-prevention ladder according to claim 2, characterized in that, The ladder body (1) includes: At least two ladder beams (11) are arranged in parallel at intervals, and one end of each ladder beam (11) is constructed as a curved structure; A plurality of said treads (12) are connected to the ladder beam (11) and are arranged at intervals along the length of said ladder beam (11); Fixing plates (13), a plurality of the fixing plates (13) are connected to the ladder beams (11) and are used to connect fixing facilities.
4. The grain silo fall-prevention ladder according to claim 3, characterized in that, A partition (2) is movably connected to one end of the ladder body (1) away from the fall arrestor (4). A lock is provided between the partition (2) and the ladder body (1). The length of the partition (2) is greater than the distance between the two footboards (12) in the length direction of the ladder body (1).
5. The grain silo fall-prevention ladder according to claim 1, characterized in that, The protective cage (3) includes: Arc-shaped enclosure (31), a plurality of the arc-shaped enclosures (31) are connected to the ladder body (1) and arranged at intervals to form a semi-enclosure of the ladder body (1); A reinforcing rib (32) is connected to the arc-shaped enclosure (31) and is parallel to the length direction of the ladder body (1).
6. The grain silo fall-prevention ladder according to claim 1, characterized in that, There is a gap between the protective net (5) and the protective cage (3).
7. The grain silo fall-prevention ladder according to claim 6, characterized in that, Along the length of the ladder body (1), the protective net (5) is connected to the cage (3) via a flexible cable (6) at the end near the fall arrestor (4).
8. The grain silo fall-prevention ladder according to claim 1, characterized in that, The fall arrestor (4) is connected to the cage (3) via a connecting bracket, the connecting bracket comprising: A crossbeam (41), on which the fall arrestor (4) is connected; The first limiting member (43) is movably connected to the crossbeam (41) to move along the length direction of the crossbeam (41); The second limiting member (44) is movably connected to the crossbeam (41) to move along the length direction of the crossbeam (41); The first supporting diagonal bar (47) is connected at both ends to the crossbeam (41) and the cage (3).
9. The grain silo fall-prevention ladder according to claim 8, characterized in that, The crossbeam (41) is also connected to the ladder body (1) via a second supporting diagonal bar (48).
10. The grain silo fall-prevention ladder according to claim 1, characterized in that, The fall arrestor (4) includes: The self-locking device body (42) is connected to the protective cage (3); Safety ring (45), the safety ring (45) is connected to the free end of the steel rope of the self-locking device body (42); A pull rope (46) is connected to the safety ring (45), wherein the length of the pull rope (46) in the length direction of the ladder body (1) is not less than the length of the cage (3).