Movable and height-adjustable conveyor crossing ladder
By designing a movable and height-adjustable conveyor ladder, and using hinged and adjustable components, the problem of difficult disassembly and height adjustment of existing ladders has been solved, realizing convenient disassembly and height adjustment of the ladder, and improving safety and flexibility.
Patent Information
- Application Number
- CN202520666436.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The existing gantry ladder is welded and fixed to the conveyor, making dismantling and relocation difficult, and the height cannot be adjusted, affecting safety and convenience.
A movable, height-adjustable conveyor hopping ladder was designed, employing articulated and adjustable components. It includes a horizontal hopping platform and a side ladder, equipped with casters, locking devices, adjustment holes, and detachable adjustment components to achieve angle and height adjustment of the hopping platform and side ladder, and provides safety protection through guardrails.
It enables convenient disassembly, assembly, and relocation of the ladder, and allows for height adjustment as needed, ensuring safety and reliability while improving operational flexibility and safety.
Smart Images
Figure CN223891743U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of conveyor maintenance crossing equipment, and in particular relates to a movable and height-adjustable conveyor crossing ladder. Background Technology
[0002] During routine maintenance of belt conveyors, it is often necessary to cross the conveyor to the other side for operations, depending on the site conditions. To ensure safety, a crossing ladder is generally required. Existing crossing ladders are typically welded to the conveyor, making disassembly and relocation difficult, and their height cannot be adjusted. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides the following technical solution:
[0004] A movable, height-adjustable conveyor lap ladder includes a horizontal lap platform in the middle and side ladders on both sides. The two ends of the lap platform are respectively hinged to the corresponding side ladders through hinge components. Each side ladder is provided with two casters with locking devices at its lower end. A first adjustment component is provided between each side ladder and the lap platform to adjust and lock the angle between the lap platform and the side ladder. The side ladder is also equipped with a detachable second adjustment component, which connects the side ladder to the corresponding side of the conveyor. The overall length of the second adjustment component is adjustable and lockable.
[0005] Furthermore, the first adjustment component includes an outer perforated plate, the top of which is fixed to the side plate of the crossing platform by welding. The outer perforated plate has an outer adjustment hole arc array consisting of multiple outer adjustment holes, and the side plate of the side ladder has an inner adjustment hole arc array consisting of multiple inner adjustment holes. The outer adjustment hole arc array and the inner adjustment hole arc array share the common center of the arc array with the hinge axis of the side ladder and the crossing platform as the center of the arc array. The included angle between the holes in the outer adjustment hole arc array is at least twice the included angle between the holes in the inner adjustment hole arc array. After the angle between the side ladder and the crossing platform is adjusted, the angle is locked by inserting a locking pin into the outer adjustment hole and the corresponding inner adjustment hole.
[0006] Furthermore, it also includes a limiting plate that can resist the side ladder to limit the angle of the side ladder relative to the cross platform. The top of the limiting plate is welded and fixed to the bottom plate of the cross platform, and the limiting plate is also welded and fixed to the side plate of the cross platform. The limiting plate, the bottom plate of the cross platform, and the side plate are perpendicular to each other.
[0007] Furthermore, the second adjustment component includes a first screw, a middle part, and a second screw, which are coaxially screwed together in sequence. The head of the first screw is fixed with a screw hook. The side plate of the side ladder is provided with a plurality of hook holes arranged at intervals along the length direction. The screw hook is used to hook the corresponding hook hole to connect one end of the second component to the side ladder. The tail of the second screw is hinged to the middle part of the hook connecting seat. The upper and lower ends of the hook connecting seat are respectively hinged to the tail of a hook. The top of the hook is formed with an inwardly bent hook body. The upper and lower hooks can respectively clamp the upper and lower sides of the C-shaped steel on the side of the conveyor support body, and the hook body hooks the upper and lower sides to realize the connection between the other end of the second adjustment component and the corresponding side of the conveyor.
[0008] Furthermore, the side ladders are equipped with guardrails on both sides.
[0009] Furthermore, the ladder railing includes a main body made of welded steel pipes, with several plug-in rods welded and fixed or extending from the bottom of the main body. Corresponding plug-in pipes are welded and fixed on the side plates of both sides of the side ladder. The ladder railing can be installed and disassembled by the insertion and removal of the plug-in rods and plug-in pipes.
[0010] Furthermore, the front of the ladder railing also features a square-shaped extension.
[0011] Furthermore, platform railings are also provided on both sides of the crossing platform.
[0012] Furthermore, the platform railing includes a main body made of welded steel pipes, with several plug-in rods welded and fixed or extending from the bottom of the main body. Corresponding plug-in pipes are welded and fixed across the side plates of both sides of the platform. The installation and disassembly of the platform railing are achieved through the insertion and removal of the plug-in rods and plug-in pipes.
[0013] This utility model has a simple structure, is easy to assemble and disassemble, and can be moved to the corresponding location as needed. It can also adjust the height distance between the crossing platform and the conveyor, and ensures safety and reliability through the cooperation of multiple sets of adjustment components. Attached Figure Description
[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram showing the usage state of this utility model;
[0016] Figure 2 This is a schematic diagram of the second adjustment component;
[0017] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle;
[0018] Figure 4 This is an exploded view of the first adjusting component and the hinge component.
[0019] In the figure, the reference numerals are: conveyor 100; I-beam 101;
[0020] Side ladder 1; side panel 11; mounting hole 111; connector 12
[0021] Cross-platform 2; Side plate 21; Insert pipe 22;
[0022] Ladder guardrail 3; Connecting rod 31; Extension part 32;
[0023] Platform guardrail 4; plug-in rod 41;
[0024] 5 omnidirectional wheels;
[0025] Second adjusting component 6; middle part 60; first screw 61; screw hook 611; second screw 62; hinge lug 621; rod hook connecting seat 63; hinge plate 631; rod hook 64; hook body 641;
[0026] First adjusting component 7; outer perforated plate 71; outer adjusting hole 711; inner adjusting hole 712; locking pin 72;
[0027] Hinged assembly 8; pin seat 81; hinge pin 82; limit plate 831. Detailed Implementation
[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0029] In the description of the embodiments of this utility model, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this utility model or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] In this invention, "multiple" refers to two or more (including two). The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0031] Unless otherwise explicitly stated and limited, the terms “set up,” “install,” and “connect” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a direct connection or an indirect connection through an intermediate medium.
[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] As shown in the figure, this utility model includes a horizontal crossing platform 2 located in the middle, and side ladders 1 located at both ends of the crossing platform and respectively hinged to it by hinge components 8. Each side ladder 1 is provided with two casters 5 with locking devices at the lower end. The casters 5 can be used to move the entire crossing ladder of this utility model to the required position, and the locking devices of the casters 5 can realize the first locking function of the entire crossing ladder relative to the conveyor in the conveying direction.
[0034] Each side ladder 1 is also provided with a first adjustment component 7 between it and the crossing platform 2. The angle between the crossing platform 2 and the side ladder 1 can be adjusted and locked through the first adjustment component 7, thereby realizing the adjustment and locking of the height between the crossing platform 2 and the conveyor 100.
[0035] Specifically, in combination Figure 1 and Figure 4 In the embodiment of the first adjustment component 7 shown, the first adjustment component 7 includes an outer perforated plate 71. The top of the outer perforated plate 71 is fixed to the side plate 21 of the crossing platform 2 by welding. The outer perforated plate 71 has an outer adjustment hole arc array composed of multiple outer adjustment holes 711. The side plate 11 of the side ladder 1 has an inner adjustment hole arc array composed of multiple inner adjustment holes 712. The outer adjustment hole arc array and the inner adjustment hole arc array share the common center of the arc array with the hinge axis of the side ladder and the crossing platform 2 as the common center of the arc array. The included angle between the holes of the outer adjustment hole arc array is at least twice the included angle between the holes of the inner adjustment hole arc array. After the angle between the side ladder 1 and the crossing platform 2 is adjusted, the angle is locked by inserting a locking pin 72 into the outer adjustment hole 711 and the corresponding inner adjustment hole 712.
[0036] Furthermore, an embodiment of the hinge assembly 8 between the side ladder 1 and the crossing platform 2 is as follows: it includes a pin seat 81, the top of which is welded and fixed to the bottom plate of the crossing platform 2, and the hinge pin 82 passes through the side plate of the side ladder 1 and the shaft hole on the pin seat 81 respectively.
[0037] Furthermore, it also includes a limiting plate 831. The top of the limiting plate 831 is welded and fixed to the bottom plate of the crossing platform 2, and the limiting plate 831 is also welded and fixed to the side plate of the crossing platform 2. The limiting plate 831, the bottom plate of the crossing platform 2, and the side plate are perpendicular to each other, so that they act as reinforcing ribs to further enhance the strength of the limiting plate 831 and the side plate. By the limiting plate 831 abutting against the side plate 11 of the side ladder 1, the maximum angle of the side ladder 1 relative to the crossing platform 2 is limited, preventing accidents.
[0038] The side ladder 1 is also equipped with a detachable second adjustment component 6. The side ladder 1 is fixed to the corresponding side of the conveyor 100 through the second adjustment component 6, thereby realizing a second locking of the entire ladder relative to the conveyor in the conveying direction. Since the second adjustment component 6 is detachable, it is convenient to move the entire ladder. Furthermore, the length of the second adjustment component 6 is adjustable and lockable, so it can be adjusted to suit the angle adjustment needs of the second adjustment component, and can also assist the first adjustment component in locking the angle.
[0039] Specifically, such as Figures 1 to 3 As shown, the second adjustment component 6 includes a first screw 61, a middle part 60, and a second screw 62, which are coaxially screwed together in sequence. The overall length can be adjusted by screwing. A screw hook 611 is fixed to the head of the first screw 61. The side plate of the side ladder 1 has multiple hanging holes 111 arranged at intervals along the length direction. The screw hook 611 is used to hook onto the corresponding hanging hole 111, thereby connecting one end of the second component 6 to the side ladder 1. This method is also very convenient for disassembly. A hinge is fixed to the tail of the second screw 62. The connecting lug 621 and the hinge plate 631 fixed to the middle of the hook connecting seat 63 are hinged together by a pin. The upper and lower ends of the hook connecting seat 63 are respectively hinged to the tail of a hook 64. The top of the hook 64 is respectively formed with an inwardly bent hook body 641. The upper and lower hooks 64 respectively clamp the upper and lower sides of the C-shaped steel 101 on the side of the support body of the conveyor 100, and the hook body 641 hooks the upper and lower sides, thereby realizing the connection between the other end of the second adjusting component 6 and the corresponding side of the conveyor 100.
[0040] Preferably, the side ladder 1 is also equipped with ladder railings 3 on both sides, which serve a protective function and can also provide handrails for maintenance personnel to hold onto when climbing. Furthermore, the ladder railings 3 are detachable and are made of welded steel pipes, making them lightweight and cost-effective. The ladder railings 3 include a main body made of welded steel pipes, with several plug-in rods 31 welded and fixed or extending from the bottom of the main body. Corresponding plug-in pipes 12 are welded and fixed on the side plates 11 on both sides of the side ladder 1. The ladder railings 3 can be installed and disassembled by inserting and pulling the plug-in rods 31 and the plug-in pipes 12.
[0041] Preferably, the crossing platform 2 is also equipped with platform railings 4 on both sides, which serve a protective function and can also provide handholds for maintenance personnel. Furthermore, the platform railings 4 are detachable and are made of welded steel pipes, making them lightweight and cost-effective. The platform railings 4 include a main body made of welded steel pipes, with several plug-in rods 41 welded and fixed or extending from the bottom of the main body. Corresponding plug-in pipes 22 are welded and fixed on the side plates 21 on both sides of the crossing platform 2. The installation and removal of the platform railings 4 are achieved by the insertion and removal of the plug-in rods 41 and the plug-in pipes 22.
[0042] Furthermore, the front of the ladder railing 3 is also formed with a square-shaped extension 32 to solve the problem of excessive gap between the ladder railing and the platform railing when the acute angle between the side ladder 1 and the crossing platform 2 increases, which helps to improve safety and convenience.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A movable, height-adjustable conveyor traversing ladder, comprising a horizontal traversing platform in the middle and side ladders on both sides, characterized in that, The two ends of the crossing platform are respectively hinged to the corresponding side ladders through hinge components. Each side ladder is equipped with two casters with locking devices at the bottom. Each side ladder and the crossing platform are provided with a first adjustment component that can adjust and lock the angle between the crossing platform and the side ladder. The side ladder is also equipped with a detachable second adjustment component, which connects the side ladder to the corresponding side of the conveyor. The overall length of the second adjustment component can be adjusted and locked.
2. The movable, height-adjustable conveyor ladder as described in claim 1, characterized in that, The first adjustment component includes an outer perforated plate, the top of which is fixed to the side plate of the crossing platform by welding. The outer perforated plate has an outer adjustment hole arc array consisting of multiple outer adjustment holes, and the side plate of the side ladder has an inner adjustment hole arc array consisting of multiple inner adjustment holes. The outer adjustment hole arc array and the inner adjustment hole arc array share the common center of the arc array with the hinge axis of the side ladder and the crossing platform as the center of the arc array. The included angle between the holes in the outer adjustment hole arc array is at least twice the included angle between the holes in the inner adjustment hole arc array. After the angle between the side ladder and the crossing platform is adjusted, the angle is locked by inserting a locking pin into the outer adjustment hole and the corresponding inner adjustment hole.
3. The movable, height-adjustable conveyor ladder as described in claim 1, characterized in that, It also includes a side plate that can withstand the side ladder and a limiting plate that limits the angle of the side ladder relative to the cross platform. The top of the limiting plate is welded and fixed to the bottom plate of the cross platform, and the limiting plate is also welded and fixed to the side plate of the cross platform. The limiting plate, the bottom plate of the cross platform, and the side plate are perpendicular to each other.
4. The movable, height-adjustable conveyor ladder as described in claim 1, characterized in that, The second adjustment component includes a first screw, a middle part, and a second screw, which are coaxially screwed together in sequence. The head of the first screw is fixed with a screw hook. The side plate of the side ladder is provided with multiple hook holes arranged at intervals along the length direction. The screw hook is used to hook the corresponding hook hole to connect one end of the second component to the side ladder. The tail of the second screw is hinged to the middle part of the hook connecting seat. The upper and lower ends of the hook connecting seat are respectively hinged to the tail of a hook. The top of the hook is formed with an inwardly bent hook body. The upper and lower hooks can respectively clamp the upper and lower sides of the C-shaped steel on the side of the conveyor support body, and the hook body hooks the upper and lower sides to realize the connection between the other end of the second adjustment component and the corresponding side of the conveyor.
5. A movable, height-adjustable conveyor ladder as described in claim 1, characterized in that, The side ladder is also equipped with ladder railings on both sides.
6. A movable, height-adjustable conveyor ladder as described in claim 5, characterized in that, The ladder railing consists of a main body made of welded steel pipes. Several plug-in rods are welded and fixed or extend from the bottom of the main body. Corresponding plug-in pipes are welded and fixed on the side plates of both sides of the side ladder. The ladder railing can be installed and disassembled by plugging and pulling the plug-in rods and plug-in pipes.
7. A movable, height-adjustable conveyor ladder as described in claim 5, characterized in that, The front of the ladder railing also has a square-shaped extension.
8. A movable, height-adjustable conveyor ladder as described in claim 1, characterized in that, The platform is also equipped with guardrails on both sides.
9. A movable, height-adjustable conveyor ladder as described in claim 8, characterized in that, The platform railing consists of a main body made of welded steel pipes. Several plug-in rods are welded and fixed or extend from the bottom of the main body. Corresponding plug-in pipes are welded and fixed across the side plates of the platform. The installation and disassembly of the platform railing are achieved by the insertion and removal of the plug-in rods and plug-in pipes.