Crawling ladder structure and portal frame protection cage crawling ladder

Abstract

The embodiment of the utility model provides a ladder stand structure and a portal frame protection cage ladder stand, and relates to the technical field of protection equipment. The structure comprises a crawling ladder body, a safety rope, a sliding rail, a sliding piece and a positioning assembly. The sliding rail is installed on the crawling ladder body, the sliding rail is arranged in the height direction of the portal frame, and a plurality of positioning parts are arranged on the sliding rail. The sliding piece is arranged on the sliding rail in a sliding mode and used for fixing the safety rope. The positioning assembly comprises a detection piece, a positioning piece and a control piece, the detection piece is used for detecting the positioning part, the detection piece and the positioning piece are both arranged on the sliding piece, and the control piece is in communication connection with the detection piece and the positioning piece. According to the crawling ladder structure provided by the embodiment of the invention, through combination of the sliding rail, the sliding piece and the positioning assembly, rapid adjustment and stable fixation of the position of the safety rope are achieved, and higher safety guarantee is provided for climbing personnel.

Description

Technical Field

[0001] This application relates to the field of protective equipment technology, and in particular to a climbing ladder structure and a gantry cage climbing ladder. Background Technology

[0002] A gantry crane is a type of equipment used for lifting heavy objects and is widely installed in construction, bridges, ships, docks, and other fields. Gantry cranes are usually equipped with ladders to assist workers in climbing and to ensure operational safety.

[0003] The climbing ladder device includes a cage body and a climbing ladder body. The cage body is installed on the outside of the gantry frame, while the climbing ladder body is located on the gantry frame and inside the cage. When climbing the climbing ladder body, the worker is inside the cage body, which provides safety for the worker. Typically, the worker is equipped with a safety rope, which is secured to a pre-set position on the gantry frame during the climb to prevent accidental falls.

[0004] However, workers need to change the anchoring position of the safety rope multiple times as they climb, meaning they need to unscrew the safety rope from the gantry and anchor it to the next anchoring position. This involves many steps, making it easy for workers to fall from the climbing ladder, resulting in a low safety factor. Utility Model Content

[0005] In view of this, embodiments of this application provide a climbing ladder structure and a gantry cage climbing ladder to solve the problem of numerous steps and low safety factor when workers change the fixed position of the safety rope during climbing.

[0006] To achieve the above objectives, embodiments of this application provide a climbing ladder structure and a gantry crane cage climbing ladder, employing the following technical solutions:

[0007] This application provides a ladder structure, including:

[0008] The ladder itself;

[0009] Safety rope;

[0010] A slide rail is installed on the ladder body. The slide rail is arranged along the height direction of the gantry frame and has multiple positioning parts.

[0011] A sliding member is slidably disposed on the slide rail, and the sliding member is used to fix the safety rope;

[0012] A positioning component includes a detection element, a positioning element, and a control element. The detection element is used to detect the positioning part. Both the detection element and the positioning element are disposed on the slide. The control element is communicatively connected to the detection element and the positioning element.

[0013] The control element is configured such that when the slider slides, the detection element detects the position of the positioning part and controls the positioning element to fix the slider to the slide rail.

[0014] In one possible implementation, the positioning part includes a positioning screw hole formed on the slide rail, and the positioning member is provided with a thread adapted to the positioning screw hole;

[0015] The positioning component further includes a driving member, which is disposed on the slide member. The output part of the driving member is fixedly connected to the positioning member. The driving member is configured such that the control member controls its forward or reverse rotation to enable the positioning member to enter or exit the positioning screw hole.

[0016] In one possible implementation, guide grooves are provided on the two opposite sidewalls of the slide rail, and the slide includes a slide body and grippers disposed at both ends of the slide body, the grippers being slidably disposed in the guide grooves.

[0017] In one possible implementation, the slider is provided with at least two first elastic elements and an unlocking component;

[0018] The first elastic element connects the slider and the gripper, and is adapted to provide a force to the gripper to move toward the slider; the unlocking component is adapted to push the gripper to move away from the slider.

[0019] The slider has at least two receiving grooves, each corresponding to a first elastic element. The first elastic element is fixed in the receiving groove and connected to the gripper, which is suitable for providing tension to the slider.

[0020] In one possible implementation, the unlocking component includes:

[0021] A base rod is rotatably connected to the slider, with one end of the base rod located outside the slider;

[0022] At least two action rods are symmetrically fixed to the base rod in pairs;

[0023] The actuating rod is configured to rotate the base rod to drive it to move the gripper outward until the gripper disengages from the guide groove.

[0024] In one possible implementation, the unlocking component further includes a torsion spring sleeved on the outer periphery of the base rod, one end of the torsion spring being connected to the base rod and the other end being connected to the slider. The torsion spring is adapted to provide a force to the base rod to reset it when the base rod rotates.

[0025] In one possible implementation, the gripper includes a gripper and a limiting member connecting the gripper, the gripper being slidably disposed within the guide groove;

[0026] The slider has symmetrical sliding openings at both ends of the gripper, which allow the gripper to slide. The slider also has two limiting grooves, which correspond one-to-one with the sliding openings. The limiting member slides within the limiting groove.

[0027] In one possible implementation, the gripper has an oil storage chamber, and an oil outlet is provided on either side wall of the guide groove where the gripper abuts. An oil blocking component is provided in the oil storage chamber, and the oil blocking component is configured to open the oil outlet when the gripper abuts the guide groove.

[0028] In one possible implementation, the oil-blocking component includes:

[0029] The sealing ball is slidably disposed in the oil storage cavity, and is adapted to have its top end located outside the gripper when sealing the oil outlet hole;

[0030] The second elastic element is fixed inside the oil storage cavity, with one end connected to the sealing ball, and is adapted to apply a force toward the oil outlet to the sealing ball.

[0031] This application embodiment also provides a gantry crane protective cage ladder, including a gantry crane and a ladder structure as described above disposed on the gantry crane, wherein the gantry crane is covered with a protective cage that extends along the height direction of the gantry crane, and the ladder structure is disposed inside the protective cage.

[0032] The ladder structure and gantry cage ladder provided in this application embodiment allow workers to secure a safety rope to their bodies before climbing the ladder body. A sliding component then moves along a slide rail. A detection component continuously monitors the position of the positioning part on the slide rail. When a suitable positioning part is detected, a control component communicates and controls the positioning component to position itself at the designated location, thus fixing the sliding component to the slide rail. This ensures that the worker is securely attached to the ladder body within the range of the safety rope. The ladder structure design considers the convenient operation and fixation of the safety rope. Through the combination of the slide rail, sliding component, and positioning assembly, it achieves rapid adjustment and stable fixation of the safety rope position, providing a higher level of safety for climbers. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with those of this application and, together with the specification, serve to explain the principles of the embodiments of this application. Obviously, the drawings described below are some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the ladder structure provided in the embodiments of this application;

[0035] Figure 2 for Figure 1 Schematic diagram of the middle sliding component;

[0036] Figure 3 for Figure 2 A schematic diagram of the structure with the gripper in the unlocked state;

[0037] Figure 4 for Figure 2 A schematic diagram of the structure with the gripper in the unlocked state;

[0038] Figure 5 for Figure 3 A schematic diagram of the structure of the unlocking component;

[0039] Figure 6 This is a schematic diagram of the oil-blocking assembly provided in an embodiment of this application;

[0040] Figure 7 for Figure 6 Schematic diagram of the oil outlet hole;

[0041] Figure 8 This is a schematic diagram of the structure of the gantry cage ladder provided in the embodiments of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100 - Ladder body; 110 - Gantry frame; 111 - Connector; 120 - Ladder frame;

[0044] 200 - Slide rail; 210 - Guide groove;

[0045] 300-Sliding component; 310-Sliding component body; 320-Gripper; 321-Gripper; 3211-Oil reservoir; 3212-Oil outlet; 322-Limiting component;

[0046] 400 - Positioning assembly; 410 - Positioning element; 420 - Positioning screw hole;

[0047] 500 - First elastic element;

[0048] 600 - Unlocking component; 610 - Base rod; 620 - Actuating rod; 630 - Torsion spring;

[0049] 700 - Oil plugging assembly; 710 - Sealing ball; 720 - Second elastic element;

[0050] 800-Cage.

[0051] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the embodiments of this application in any way, but rather to illustrate the concepts of the embodiments of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0052] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0053] Secondly, it should be noted that in the description of the embodiments of this application, the terms "inner" and "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0054] Furthermore, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0055] A gantry crane is a type of equipment used for lifting heavy objects and is widely installed in construction, bridges, ships, docks, and other fields. Gantry cranes are usually equipped with ladders to assist workers in climbing and to ensure operational safety.

[0056] The climbing ladder device includes a cage body and a climbing ladder body. The cage body is installed on the outside of the gantry frame, while the climbing ladder body is located on the gantry frame and inside the cage. When climbing the climbing ladder body, the worker is inside the cage body, which provides safety for the worker. Typically, the worker is equipped with a safety rope, which is secured to a pre-set position on the gantry frame during the climb to prevent accidental falls.

[0057] However, workers need to change the anchoring position of the safety rope multiple times as they climb, meaning they need to unscrew the safety rope from the gantry and anchor it to the next anchoring position. This involves many steps, making it easy for workers to fall from the climbing ladder, resulting in a low safety factor.

[0058] To address the aforementioned issues, this application provides a climbing ladder structure and a gantry crane safety cage climbing ladder. Before climbing the ladder body, the worker secures a safety rope to their body and pushes a sliding component to slide on a slide rail. A detection component continuously monitors the position of the positioning part on the slide rail. When a suitable positioning part is detected, a control component communicates and controls the positioning component to position itself at the positioning part, thus fixing the sliding component to the slide rail. This allows the worker to be secured to the ladder body within the range of the safety rope. This climbing ladder structure design considers the convenient operation and fixation of the safety rope. Through the combination of the slide rail, sliding component, and positioning assembly, it achieves rapid adjustment and stable fixation of the safety rope position, providing a higher level of safety for climbers.

[0059] The embodiments of this application will now be described in detail with reference to the accompanying drawings and specific examples.

[0060] Reference Figures 1 to 7 As shown in the figure, an embodiment of this application provides a ladder structure, including a ladder body 100, a safety rope, a slide rail 200, a slide 300, and a positioning component 400.

[0061] The ladder body 100 includes a gantry frame 110 and a ladder frame 120, as shown in the reference. Figure 1 and Figure 2 As shown, multiple sets of ladder frames 120 are arranged along the height direction of the gantry frame 110, with each set of ladder frames 120 symmetrically arranged on both sides of the gantry frame 110. Connectors 111 are provided on the gantry frame 110, and slide rails 200 are installed on the ladder body 100 via the connectors 111. The slide rails 200 are arranged along the height direction of the gantry frame 110 and have multiple positioning parts. Sliding elements 300 are slidably mounted on the slide rails 200 and are used to secure safety ropes.

[0062] The positioning component 400 includes a detection element, a positioning element 410, and a control element. The detection element is used to detect the positioning part. Both the detection element and the positioning element 410 are disposed on the slide member 300. The control element is communicatively connected to the detection element and the positioning element 410. The control element is configured such that when the slide member 300 slides, the detection element detects the position of the positioning part and controls the positioning element 410 to fix the slide member 300 to the slide rail 200.

[0063] Before climbing the ladder body 100, the worker secures the safety rope to their body and pushes the slider 300 to slide on the slide rail 200. The detection component continuously monitors the position of the positioning part on the slide rail 200. When a suitable positioning part is detected, the control component communicates with and controls the positioning component 410 to position itself at the positioning part, thus fixing the slider 300 to the slide rail 200. This allows the worker to be secured to the ladder body 100 within the range of the safety rope. The ladder structure design takes into account the convenient operation and fixation of the safety rope. Through the combination of the slide rail 200, the slider 300, and the positioning component 400, the position of the safety rope can be quickly adjusted and stably fixed, providing a higher level of safety for climbers.

[0064] In addition, the safety rope includes a connecting part and a restraint part for connecting the worker. One end of the connecting part is connected to the sliding member 300, and the other end is connected to the restraint part. The worker is connected to the sliding member 300 by the safety rope.

[0065] Specifically, in some examples, refer to Figure 1 and Figure 2 As shown, the connector 111 includes at least two sets of U-shaped clamps and T-bolts. By sequentially fitting and fixing the U-shaped clamps onto the gantry frame, and connecting the slide rail to the U-shaped clamps with the T-bolts, the slide rail 200 and the ladder body 100 are fixed together.

[0066] It should be noted that the ladder structure should be made of high-strength, corrosion-resistant metal materials to ensure its structural stability and service life. Before workers climb, they must carefully check the ladder body 100, slide rail 200, and other connecting parts for cracks or damage, and check whether the connection of connector 111 is stable and reliable. If everything is normal, it can be used. In addition, a qualified safety rope must be worn correctly. The slide 300 must be pulled up and down to confirm that it is reliably connected to the slide rail 200. It can only be used after confirming that the up and down movement is smooth.

[0067] Furthermore, the positioning part includes a positioning screw hole 420 formed on the slide rail 200, and the positioning member 410 is provided with a thread adapted to the positioning screw hole 420; the positioning assembly 400 also includes a driving member, which is disposed on the slide member 300, and the output part of the driving member is fixedly connected to the positioning member 410. The driving member is configured such that the control member controls its forward or reverse rotation to enable the positioning member 410 to enter or move out of the positioning screw hole 420.

[0068] The operator pushes the slider 300 along the slide rail 200, while the detection component continuously monitors the position of the positioning screw hole 420. When the detection component detects that the slider 300 has reached the positioning screw hole 420 at the preset position, it outputs a signal. Subsequently, the control component drives the drive component to rotate forward, causing the positioning component 410 to screw into the positioning screw hole 420. Once the positioning component 410 is fully screwed into the positioning screw hole 420, the slider 300 is fixed to the slide rail 200, and the safety rope is also secured. This design not only achieves rapid positioning and fixation of the slider 300 on the slide rail 200, but also ensures the accuracy and stability of the positioning through precise control of the control component.

[0069] Specifically, the detection component can be connected to a signal output component. When the detection component detects the positioning screw hole 420, the signal output component outputs a signal. Furthermore, the signal output component can be an indicator light or a buzzer.

[0070] Alternatively, the control unit can be a remote control; when the detection unit reaches a preset position, the operator controls the drive unit to operate via the control unit. Furthermore, the drive unit can be a motor, electric motor, etc.

[0071] Furthermore, such as Figure 1 and Figure 2 As shown, guide grooves 210 are provided on the two opposite side walls of the slide rail 200. The slide 300 includes a slide body 310 and grippers 320 disposed at both ends of the slide body 310. The grippers 320 are slidably disposed in the guide grooves 210.

[0072] The guide groove 210 is typically designed as an elongated strip to provide a path for the slider 300 and gripper 320 to slide, ensuring that the slider 300 slides stably on the slide rail 200 and preventing it from deviating from the preset path. The slider body 310 is used to connect the safety rope, and the gripper 320 cooperates with the guide groove 210 to enable the slider 300 to slide stably on the slide rail 200.

[0073] When the slider 300 needs to be moved, the slider body 310 or the gripper 320 can be pushed to make the gripper 320 slide within the guide groove 210. The guide groove 210 restricts the direction of movement of the slider 300, ensuring that the slider 300 moves along a straight line or a preset path. This design not only improves the stability of the slider 300's sliding but also simplifies the design and operation of the slider 300.

[0074] In some examples, such as Figure 3 and Figure 4 As shown, the slider 300 is provided with at least two first elastic elements 500 and an unlocking component 600; the first elastic elements 500 are used to connect the slider 300 and the gripper 320, and are adapted to provide a force to the gripper 320 to move toward the slider 300; the unlocking component 600 is adapted to push the gripper 320 to move in a direction away from the slider 300.

[0075] The primary function of the first elastic element 500 is to connect the slider 300 and the gripper 320 through its elastic force, and to provide a force for the gripper 320 to move towards the slider 300. In other words, when no external force is applied to the gripper 320, the first elastic element 500 will push the gripper 320 closer to the slider 300, ensuring a tight connection between the slider 300 and the gripper 320. Furthermore, the first elastic element 500 can be a spring, rubber strip, etc.

[0076] Additionally, the unlocking component 600 is designed to push the gripper 320 in a direction away from the slide 300, typically when it is necessary to unlock or separate the slide 300 and the gripper 320, specifically, when replacing the slide 300. Furthermore, the unlocking component 600 can operate mechanically, electrically, or otherwise.

[0077] The first elastic element 500 and the unlocking component 600 within the slider 300 together constitute the connection and unlocking mechanism between the slider 300 and the gripper 320. The first elastic element 500 provides stable connection and restoring force, ensuring a tight connection between the slider 300 and the gripper 320; the unlocking component 600 can separate them when needed to allow for the replacement or adjustment of the slider 300, making the connection and separation operations between the slider 300 and the gripper 320 more convenient and safer.

[0078] Furthermore, the slider 300 has at least two receiving grooves, which correspond one-to-one with the first elastic member 500. The first elastic member 500 is fixed in the receiving groove and is connected to the gripper 320, which is suitable for providing tension to the slider 300.

[0079] The receiving groove provides a fixed space for the first elastic element 500, ensuring that it is stably installed inside the slide 300. This fixing method prevents the first elastic element 500 from shifting or loosening during movement or vibration, thereby ensuring the stability and reliability of the connection between the slide 300 and the gripper 320.

[0080] In some embodiments, such as Figures 3 to 5 As shown, the unlocking assembly 600 includes a base rod 610 and at least two actuating rods 620.

[0081] The base rod 610 is rotatably connected to the slide 300, with one end of the base rod 610 located outside the slide 300 for easy operation by the operator; the action rods 620 are symmetrically fixed to the base rods 610 in pairs, which helps to ensure that the gripper 320 receives a uniform thrust on both sides; the action rods 620 are configured to rotate the base rods 610 to drive them to push the gripper 320 outward until the gripper 320 disengages from the guide groove 210.

[0082] When unlocking is required, the operator rotates one end of the base rod 610 located outside the slider 300. The rotation of the base rod 610 drives the actuating rod 620 to move, and both actuating rods 620 simultaneously push the gripper 320 to both sides. As the actuating rods 620 push, the gripper 320 begins to move outward, gradually disengaging from the constraint of the guide groove 210. When the gripper 320 is completely disengaged from the guide groove 210, the connection between the slider 300 and the guide groove 210 is unlocked, and the slider 300 can be removed from the slide rail 200 or its position adjusted. Furthermore, when it is necessary to relock the slider 300, the operator simply realigns the gripper 320 with the guide groove 210 and pushes it in. Under the action of the first elastic element 500, the gripper 320 will be tightly positioned within the guide groove 210, thus re-establishing the connection between the slide rail 200 and the slider 300.

[0083] Furthermore, one end of the action rod 620 is connected to the base rod 610, and the other end is hemispherical.

[0084] Preferably, the unlocking component 600 further includes a torsion spring 630, which is sleeved on the outer periphery of the base rod 610. One end of the torsion spring 630 is connected to the base rod 610, and the other end is connected to the slider 300. The torsion spring 630 is adapted to provide a force to the base rod 610 to reset it when the base rod 610 rotates.

[0085] When the base rod 610 is rotated to push the gripper 320 outward, the torsion spring 630 stores energy under the action of torsional force. Correspondingly, once the external force disappears, the torsion spring 630 releases the stored energy, returning the base rod 610 to its initial position. This resetting force eliminates the need for the user to manually reset the base rod 610, improving operational convenience.

[0086] In some examples, the gripper 320 includes a gripper 321 and a limiting member 322 connecting the gripper 321. The gripper 321 is slidably disposed in the guide groove 210. The slide member 300 is provided with symmetrical sliding openings at both ends of the gripper 320 for the gripper 321 to slide. The slide member 300 is also provided with two limiting grooves, which correspond one-to-one with the sliding openings. The limiting member 322 is slidably disposed in the limiting groove.

[0087] The sliding opening allows the gripper 321 to slide within it, thereby enabling the gripper 320 to connect or disconnect from the guide groove 210; the limiting groove is used to accommodate the limiting member 322 and limit its sliding range. Specifically, by adjusting the size and shape of the limiting groove, the sliding distance and stability of the gripper 320 can be controlled.

[0088] During the unlocking operation, rotating the base rod 610 causes the actuating rod 620 to push the gripper 320 outward. Specifically, the actuating rod 620 pushes the limiting member 322 to slide in the limiting groove. The limiting member 322 and the limiting groove ensure that the gripper 320 remains within the sliding member 300, preventing the gripper 320 from disengaging from the sliding member 300 and ensuring the stability and controllability of the gripper 320.

[0089] In some examples, the limiting member 322 has an arc-shaped groove on its side wall near the actuating rod 620, which is suitable for the contact end of the actuating rod 620.

[0090] In addition, such as Figure 6 and Figure 7 As shown, the gripper 321 has an oil storage chamber 3211 inside, and the gripper 321 has an oil outlet hole 3212 on any side wall of the guide groove 210. The oil storage chamber 3211 has an oil blocking component 700 inside, and the oil blocking component 700 is configured such that the oil outlet hole 3212 is opened when the gripper 321 abuts against the guide groove 210.

[0091] The gripper 321 has an internal oil reservoir 3211 for storing lubricating oil, ensuring sufficient lubrication when the gripper 321 contacts and moves relative to the guide groove 210, reducing wear and friction. When the gripper 321 is in close contact with the guide groove 210, the oil outlet 3212 opens, allowing lubricating oil to flow directly into the contact surface. At this time, the oil-blocking assembly 700 is in the open state, allowing the lubricating oil in the oil reservoir 3211 to flow out through the oil outlet 3212, lubricating the contact surface. Correspondingly, when the gripper 321 separates from the guide groove 210 or is in a non-working state, the oil-blocking assembly 700 closes the oil outlet 3212 to prevent lubricating oil leakage or waste. Through the cooperation of the oil reservoir 3211, the oil outlet 3212, and the oil-blocking assembly 700, effective lubrication between the gripper 321 and the guide groove 210 is achieved.

[0092] In some examples, the oil plugging assembly 700 includes a plugging ball 710 and a second elastic element 720.

[0093] The sealing ball 710 is slidably disposed in the oil storage cavity 3211, and its top end is located outside the gripper 321 when the oil outlet 3212 is blocked; the second elastic member 720 is fixed in the oil storage cavity 3211, and one end of its member is connected to the sealing ball 710, and is adapted to apply a force toward the oil outlet 3212 to the sealing ball 710.

[0094] When the gripper 321 is in close contact with the guide groove 210, the sealing ball 710 needs to be pushed open to allow lubricating oil to flow out from the oil outlet 3212. When the gripper 321 is not in contact with the guide groove 210 or is in a non-working state, under the action of the second elastic member 720, the top of the sealing ball 710 is located outside the gripper 321 and tightly fitted against the inlet of the oil outlet 3212, thereby preventing lubricating oil leakage. The second elastic member 720 applies a force to the sealing ball 710 in the direction of the oil outlet 3212, which ensures that the sealing ball 710 is always tightly fitted against the oil outlet 3212 in the non-working state, forming an effective seal. Furthermore, the second elastic member 720 can be spring steel or rubber, etc.

[0095] Thus, during use, when the gripper 321 is in close contact with the guide groove 210, the sidewall of the guide groove 210 applies a certain pressure to the gripper 321. This pressure is transmitted to the sealing ball 710, causing it to overcome the force of the second elastic element 720 and move inward, thereby opening the oil outlet 3212. As the oil outlet 3212 opens, the lubricating oil in the oil reservoir 3211 flows out under the pressure difference, lubricating the contact surface between the gripper 321 and the guide groove 210. When the gripper 321 separates from the guide groove 210 or is in a non-working state, the force of the second elastic element 720 pushes the sealing ball 710 back to its original position, resealing the oil outlet 3212 and preventing lubricating oil leakage. This design makes the release of lubricating oil more precise and controllable, while ensuring the reliability and stability of the sliding component 300.

[0096] Additionally, refer to Figure 1 and Figure 8 As shown, this application embodiment provides a gantry crane protective cage ladder, including a protective cage 800 and any of the ladder structures provided in the above embodiments disposed inside the protective cage 800. The protective cage 800 extends along the height direction of the ladder body 100. Specifically, the protective cage 800 extends along the height direction of the gantry crane 110.

[0097] The ladder structure has been specifically described in the above embodiments, and will not be repeated in this application.

[0098] The safety cage 800 serves as a safety barrier installed outside the gantry 110 to further prevent workers from falling from heights while climbing or working. The safety cage 800 typically extends along the height of the gantry 110, forming a closed or semi-closed space.

[0099] The safety cage 800 can be made of either mesh or solid panel material, depending on the application environment and safety requirements. Mesh cages offer better visibility and ventilation, while solid panel cages provide better protection. The opening size of the safety cage 800 should be small enough to prevent workers or tools from falling through the gaps.

[0100] It should be noted that the safety cage 800 should be made of high-strength, corrosion-resistant metal materials to ensure its structural stability and service life. Before workers climb it, they should carefully check the connecting parts of the safety cage 800 for cracks or damage. If everything is normal, it can be used.

[0101] Other embodiments of the present application will readily conceive of by considering the specification and practicing the technical solutions disclosed herein.

[0102] The embodiments of this application are intended to cover any variations, uses, or adaptations of the embodiments of this application, which follow the general principles of the embodiments of this application and include common knowledge or customary technical means in the art that are not disclosed in the embodiments of this application.

[0103] The description and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of this application are indicated by the following claims.

[0104] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

Claims

1. A ladder structure, characterized in that, include: The ladder itself; Safety rope; A slide rail is installed on the ladder body. The slide rail is arranged along the height direction of the gantry frame and has multiple positioning parts. A sliding member is slidably disposed on the slide rail, and the sliding member is used to fix the safety rope; A positioning component includes a detection element, a positioning element, and a control element. The detection element is used to detect the positioning part. Both the detection element and the positioning element are disposed on the slide. The control element is communicatively connected to the detection element and the positioning element. The control element is configured such that when the slider slides, the detection element detects the position of the positioning part and controls the positioning element to fix the slider to the slide rail.

2. The ladder structure according to claim 1, characterized in that, The positioning part includes a positioning screw hole formed on the slide rail, and the positioning member is provided with a thread adapted to the positioning screw hole; The positioning component further includes a driving member, which is disposed on the slide member. The output part of the driving member is fixedly connected to the positioning member. The driving member is configured such that the control member controls its forward or reverse rotation to enable the positioning member to enter or exit the positioning screw hole.

3. The ladder structure according to claim 1, characterized in that, The slide rail has guide grooves on its two opposite side walls. The slide includes a slide body and grippers disposed at both ends of the slide body. The grippers are slidably disposed in the guide grooves.

4. The ladder structure according to claim 3, characterized in that, The slider is provided with at least two first elastic elements and an unlocking component; The first elastic element is used to connect the slider and the gripper, and is adapted to provide a force to the gripper to move it toward the slider; The unlocking component is adapted to push the gripper to move in a direction away from the slider; The slider has at least two receiving grooves, each corresponding to a first elastic element. The first elastic element is fixed in the receiving groove and connected to the gripper, which is suitable for providing tension to the slider.

5. The ladder structure according to claim 4, characterized in that, The unlocking component includes: A base rod is rotatably connected to the slider, with one end of the base rod located outside the slider; At least two action rods are symmetrically fixed to the base rod in pairs; The actuating rod is configured to rotate the base rod to drive it to move the gripper outward until the gripper disengages from the guide groove.

6. The ladder structure according to claim 5, characterized in that, The unlocking assembly also includes a torsion spring, which is sleeved on the outer periphery of the base rod. One end of the torsion spring is connected to the base rod, and the other end is connected to the slider. The torsion spring is adapted to provide a force to the base rod to reset it when the base rod rotates.

7. The ladder structure according to claim 3, characterized in that, The gripper includes a gripper and a limiting member connecting the gripper, and the gripper is slidably disposed within the guide groove; The slider has symmetrical sliding openings at both ends of the gripper, which allow the gripper to slide. The slider also has two limiting grooves, which correspond one-to-one with the sliding openings. The limiting member slides within the limiting groove.

8. The ladder structure according to claim 7, characterized in that, The gripper has an oil storage chamber inside, and an oil outlet hole is opened on either side wall of the guide groove where the gripper abuts. An oil blocking component is provided in the oil storage chamber, and the oil blocking component is configured such that the oil outlet hole is opened when the gripper abuts the guide groove.

9. The ladder structure according to claim 8, characterized in that, The oil-blocking assembly includes: The sealing ball is slidably disposed in the oil storage cavity, and is adapted to have its top end located outside the gripper when sealing the oil outlet. The second elastic element is fixed inside the oil storage cavity, with one end connected to the sealing ball, and is adapted to apply a force toward the oil outlet to the sealing ball.

10. A gantry crane safety cage ladder, characterized in that, The system includes a protective cage and a ladder structure as described in any one of claims 1-9 disposed inside the protective cage, the protective cage extending along the height direction of the ladder body.

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