Climbing maintenance ladder

Abstract

The invention provides a climbing maintenance ladder which comprises four adjusting assemblies, two extension ladder assemblies and a top seat, the adjusting assemblies are arranged on the ground, and the height of the ends, connected with the extension ladder assemblies, of the adjusting assemblies can be adjusted; wherein the overall balance of the climbing maintenance ladder is adjusted by adjusting the four adjusting assemblies respectively; the height of the top seat is adjusted by adjusting at least one of the horizontal distance between the first adjusting piece and the third adjusting piece, the length of the first extension ladder and the length of the second extension ladder; according to the climbing maintenance ladder, the four adjusting assemblies are arranged, and the height of the connecting ends of the adjusting assemblies and the extension ladder assembly can be adjusted, so that the balance of the standing position of a worker can be adjusted after the climbing maintenance ladder is erected, and the operation safety of the worker is better facilitated; the device is simple in structure, low in cost, convenient to assemble and subsequently maintain, capable of being folded, stored and transferred, small in occupied space, convenient to carry and suitable for large-scale application and popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance and operation equipment, and in particular to a high-altitude maintenance ladder. Background Art

[0002] At present, in the process of repairing some equipment located at high places, repair ladders are often used. The repair ladders are needed to climb up and support workers to perform maintenance operations; the existing repair ladders usually have the following defects when in use: 1. The legs on both sides of the existing repair ladder that are in contact with the ground cannot be adjusted, so that the repair ladder cannot adjust the balance of the standing position of the workers after it is upright. The repair ladder is prone to shaking and has poor stability. In serious cases, accidents such as tipping may occur, which is not conducive to the safety of the workers' work; 2. The upright height of the existing repair ladder is usually fixed. In environments such as mines and open-pit mines where the working height often changes, if the position to be repaired is high, the repair ladder cannot be adjusted to the corresponding height, resulting in the inability to carry out repairs; if in a relatively low environment such as a tunnel, the repair ladder cannot be adjusted in height (i.e., shortened) and cannot stand upright; 3. The repair ladder with a fixed upright height occupies a large space and is inconvenient to carry. Summary of the invention

[0003] The invention provides a climbing maintenance ladder to solve the problem that the maintenance ladder in the prior art cannot adjust the balance and the upright height.

[0004] In order to solve the above problems, the present invention provides a climbing maintenance ladder, comprising: four adjustment components, two telescopic ladder components and a top seat, the four adjustment components are respectively a first adjustment member, a second adjustment member, a third adjustment member and a fourth adjustment member, the two telescopic ladder components are respectively a first telescopic ladder and a second telescopic ladder; the two sides of one end of the first telescopic ladder are rotatably connected to the first adjustment member and the second adjustment member respectively, and the other end is rotatably connected to the top seat; the two sides of one end of the second telescopic ladder are rotatably connected to the third adjustment member and the fourth adjustment member, and the other end is rotatably connected to the top seat; the first telescopic ladder and the second telescopic ladder jointly support the top seat, and the first telescopic ladder and the second telescopic ladder are used for workers to climb; the length of the telescopic ladder component is adjustable; the adjustment component is arranged on the ground, and the height of the connection end with the telescopic ladder component is adjustable; wherein, by adjusting the four adjustment components respectively, the overall balance of the climbing maintenance ladder is adjusted; and the height of the top seat is adjusted by adjusting at least one of the horizontal distance between the first adjustment member and the third adjustment member, the length of the first telescopic ladder and the length of the second telescopic ladder.

[0005] Furthermore, the adjustment assembly includes a worm, a worm wheel, a threaded rod, a base and a lifting seat; the base is arranged on the ground, the axial direction of the threaded rod is in the vertical direction, and one end is matched with the base thread; the other end of the threaded rod is in contact with the lifting seat and can rotate relative to the lifting seat; the worm wheel is arranged on the threaded rod and meshes with the worm; the rotation axis of the worm wheel is parallel or colinear with the axis of the threaded rod, and the worm is rotatably arranged on the lifting seat, and the rotation axis of the worm is in the horizontal direction; the lifting seat is rotatably connected to the telescopic ladder assembly for supporting the telescopic ladder assembly; wherein, by rotating the worm, the worm wheel and the threaded rod are driven to rotate, and the threaded rod supports the lifting seat to rise or fall, so as to adjust the overall balance of the aerial maintenance ladder.

[0006] Furthermore, the adjustment component also includes a limit block, which is fixedly arranged on the base, and a limit groove is provided on the inner wall of the lifting seat, and the limit groove extends in the vertical direction. At least a portion of the limit block is located in the limit groove and slidably cooperates with the limit groove; wherein, the lifting height range of the lifting seat is limited by the limit block respectively cooperating with the top wall and the bottom wall of the limit groove.

[0007] Furthermore, the adjustment component also includes a handle, which is fixedly connected to the end of the worm away from the worm wheel; the staff drives the worm to rotate by rotating the handle; the adjustment component also includes an anti-slip sleeve, which is detachably mounted on the outside of the handle, the anti-slip sleeve is made of rubber material, and the outer periphery of the anti-slip sleeve has anti-slip texture, and the anti-slip texture is used to prevent slipping.

[0008] Furthermore, the telescopic ladder assembly includes a supporting ladder structure, a sliding ladder structure and a locking structure. The supporting ladder structure has two ladder feet at one end away from the top seat, and the two ladder feet are respectively rotatably connected to an adjustment assembly; the sliding ladder structure is arranged on the supporting ladder structure and can slide along the extension direction of the supporting ladder structure, and the sliding ladder structure is rotatably connected to the top seat; the locking structure is arranged on the supporting ladder structure or the sliding ladder structure, and is used to lock and fix the supporting ladder structure and the sliding ladder structure; wherein the height of the top seat is adjusted by adjusting the sliding ladder structure.

[0009] Furthermore, the locking structure includes an adjusting plate, a spring and a card block; the supporting ladder structure is provided with an empty slot, and the sliding ladder structure is provided with a plurality of card slots at intervals along the extension direction of the sliding ladder; a part of the card block is slidably arranged in the empty slot, and one end is rotatably connected to the adjusting plate, and the two ends of the spring are respectively abutted against the inner walls of the card block and the empty slot to provide elastic force to drive the other end of the card block to extend out of the empty slot; wherein, the sliding ladder structure is adjusted so that a card slot is correspondingly connected to the empty slot, and a part of the card block extends out of the empty slot and extends into the card slot, so that the supporting ladder structure and the sliding ladder structure are relatively fixed; the adjusting plate is adjusted, and the adjusting plate overcomes the elastic force of the spring to pull the card block, and the card block is disengaged from the card slot, so that the supporting ladder structure and the sliding ladder structure are released from fixation.

[0010] Furthermore, the two ends of the adjustment plate are respectively an adjustment end and a supporting end, the adjustment end is used for holding by the staff, and the supporting end has an arc-shaped surface, and the rotational connection position between the adjustment plate and the clamping block is located between the adjustment end and the supporting end; wherein, the adjustment plate is rotated by holding the adjustment end, and the arc-shaped surface on the supporting end abuts against the outer periphery of the supporting ladder structure; with the abutment position between the supporting end and the supporting ladder structure as a fulcrum, the adjustment plate forms a force-saving lever structure, so that the adjustment end can pull the clamping block out of the clamping slot with a force less than the elastic force of the spring.

[0011] Furthermore, the supporting ladder structure and / or the sliding ladder structure is a hollow ladder structure, and the supporting ladder structure has a plurality of first pedal members for climbing, and the plurality of first pedal members are equidistantly arranged along the extension direction of the supporting ladder structure; the sliding ladder structure has a plurality of second pedal members for climbing, and the plurality of second pedal members are equidistantly arranged along the extension direction of the sliding ladder structure; the extension direction of the supporting ladder structure is parallel to the extension direction of the sliding ladder structure; the spacing between two adjacent first pedal members is the same as the spacing between two adjacent second pedal members; the climbing maintenance ladder also includes a plurality of anti-slip parts, and the first pedal member and / or the second pedal member are provided with anti-slip parts, and the outer periphery of the anti-slip parts has anti-slip texture, and the anti-slip texture is used for anti-slip.

[0012] Furthermore, the aerial maintenance ladder also includes a connecting chain, and the telescopic ladder assembly has a connecting ring, and the connecting chain is detachably connected to the connecting rings on the first telescopic ladder and the second telescopic ladder, respectively, so as to relatively fix the first telescopic ladder and the second telescopic ladder; wherein, by adjusting the connection length of the connecting chain and the two connecting rings, the horizontal distance between the first adjustment member and the third adjustment member is adjusted.

[0013] Furthermore, the climbing maintenance ladder also includes a buffer, which is made of wear-resistant rubber material and is detachably arranged on the adjustment component; the buffer is used to contact the ground to support the adjustment component; the climbing maintenance ladder also includes a handle, which is arranged on the adjustment component and / or the telescopic ladder component to facilitate the staff to adjust and transport the climbing maintenance ladder.

[0014] Applying the technical solution of the present invention, the present invention proposes a climbing maintenance ladder, comprising: four adjustment components, two telescopic ladder components and a top seat, the four adjustment components are respectively a first adjustment member, a second adjustment member, a third adjustment member and a fourth adjustment member, the two telescopic ladder components are respectively a first telescopic ladder and a second telescopic ladder; the two sides of one end of the first telescopic ladder are rotatably connected to the first adjustment member and the second adjustment member respectively, and the other end is rotatably connected to the top seat; the two sides of one end of the second telescopic ladder are rotatably connected to the third adjustment member and the fourth adjustment member, and the other end is rotatably connected to the top seat; the first telescopic ladder and the second telescopic ladder jointly support the top seat, and the first telescopic ladder and the second telescopic ladder are used for workers to climb; the length of the telescopic ladder component is adjustable; the adjustment component is arranged on the ground, and the height of the connection end with the telescopic ladder component is adjustable; wherein, the overall balance of the climbing maintenance ladder is adjusted by adjusting the four adjustment components respectively; the height of the top seat is adjusted by adjusting at least one of the horizontal distance between the first adjustment member and the third adjustment member, the length of the first telescopic ladder and the length of the second telescopic ladder.

[0015] The present invention provides four adjustment components, two telescopic ladder components and a top seat for coordinated operation, and utilizes the height-adjustable function of the connection ends of the adjustment components and the telescopic ladder components to realize flexible adjustment of the heights of the two telescopic ladder components close to the ground, so that the climbing and maintenance ladder proposed by the present invention can adjust the balance of the standing position of the staff after being upright, thereby avoiding the shaking of the climbing and maintenance ladder, improving stability, avoiding safety accidents such as tipping over, and being more beneficial to the work safety of the staff; utilizing the length-adjustable function of the telescopic ladder component, the upright height of the climbing and maintenance ladder can be flexibly adjusted, and thus can be effectively applied to working environments such as underground mines and open-pit mines where the working height often changes; no matter whether the location to be repaired is high or the environment is relatively low, the smooth progress of the repair is guaranteed; the climbing and maintenance ladder proposed by the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can be folded for storage and transportation, occupies a small space, is convenient to carry, and is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A partial structural schematic diagram of a climbing maintenance ladder provided by an embodiment of the present invention is shown;

[0018] Figure 2 A schematic diagram showing the internal structure of an adjustment component provided by an embodiment of the present invention is shown;

[0019] Figure 3A schematic diagram showing the external structure of a climbing maintenance ladder provided by another embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram of a part of the structure of a high-altitude maintenance ladder provided by an embodiment of the present invention is shown in a side view;

[0021] Figure 5 Shows Figure 4 A local enlarged schematic diagram of point A in the middle.

[0022] The above drawings include the following reference numerals:

[0023] 10. Adjustment assembly; 11. Worm; 12. Worm wheel; 13. Threaded rod; 14. Base; 15. Lifting seat; 151. Limiting groove; 16. Limiting block; 17. Rotating handle;

[0024] 20. Telescopic ladder assembly; 21. First telescopic ladder; 22. Second telescopic ladder; 23. Support ladder structure; 231. Ladder foot; 232. Empty slot; 233. First pedal member; 24. Sliding ladder structure; 241. Second pedal member; 242. Slot; 25. Locking structure; 251. Adjustment plate; 252. Spring; 253. Block; 254. Arc surface; 26. Connecting ring;

[0025] 30. Top seat;

[0026] 40. Connecting chain. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 5As shown, an embodiment of the present invention provides a high-altitude maintenance ladder, including: four adjustment components 10, two telescopic ladder components 20 and a top seat 30, the four adjustment components 10 are respectively a first adjustment member, a second adjustment member, a third adjustment member and a fourth adjustment member, the two telescopic ladder components 20 are respectively a first telescopic ladder 21 and a second telescopic ladder 22; the two sides of one end of the first telescopic ladder 21 are rotatably connected to the first adjustment member and the second adjustment member respectively, and the other end is rotatably connected to the top seat 30; the two sides of one end of the second telescopic ladder 22 are rotatably connected to the third adjustment member and the fourth adjustment member, and the other end is rotatably connected to the top seat 30 0 is rotatably connected; the first telescopic ladder 21 and the second telescopic ladder 22 jointly support the top seat 30, and the first telescopic ladder 21 and the second telescopic ladder 22 are used for workers to climb; the length of the telescopic ladder assembly 20 is adjustable; the adjustment assembly 10 is set on the ground, and the height of the connection end with the telescopic ladder assembly 20 is adjustable; wherein, by adjusting the four adjustment assemblies 10 respectively, the overall balance of the climbing maintenance ladder is adjusted; by adjusting at least one of the horizontal distance between the first adjustment member and the third adjustment member, the length of the first telescopic ladder 21 and the length of the second telescopic ladder 22, the height of the top seat 30 is adjusted.

[0029] The present invention sets four adjustment components 10, two telescopic ladder components 20 and a top seat 30 for cooperation, and utilizes the height-adjustable function of the connection end between the adjustment component 10 and the telescopic ladder component 20 to realize flexible adjustment of the height of the two telescopic ladder components 20 close to the ground, so that the climbing and maintenance ladder proposed by the present invention can adjust the balance of the standing position of the staff after being upright, avoids the shaking of the climbing and maintenance ladder, improves stability, avoids safety accidents such as tipping, and is more conducive to the work safety of the staff; utilizes the length-adjustable function of the telescopic ladder component 20 to realize flexible adjustment of the upright height of the climbing and maintenance ladder, so that it can be effectively applied to working environments such as mines and open-pit mines where the working height often changes; no matter the location to be repaired is high or the environment is relatively low, the smooth progress of the repair is guaranteed; the climbing and maintenance ladder proposed by the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can be folded for storage and transportation, occupies a small space, is convenient to carry, and is suitable for large-scale promotion and use.

[0030] like Figure 1 and Figure 2As shown, the adjustment assembly 10 includes a worm 11, a worm wheel 12, a threaded rod 13, a base 14 and a lifting seat 15; the base 14 is arranged on the ground, the axial direction of the threaded rod 13 is in the vertical direction, and one end is threadedly matched with the base 14; the other end of the threaded rod 13 is in contact with the lifting seat 15 and can rotate relative to the lifting seat 15; the worm wheel 12 is arranged on the threaded rod 13 and meshes with the worm 11; the rotation axis of the worm wheel 12 is parallel or colinear with the axis of the threaded rod 13, and the worm 11 is rotatably arranged on the lifting seat 15, and the rotation axis of the worm 11 is in the horizontal direction; the lifting seat 15 is rotatably connected with the telescopic ladder assembly 20 for supporting the telescopic ladder assembly 20; wherein, by rotating the worm 11, the worm wheel 12 and the threaded rod 13 are driven to rotate, and the threaded rod 13 supports the lifting seat 15 to rise or fall, so as to adjust the overall balance of the climbing maintenance ladder.

[0031] By setting the adjustment component 10 including the worm 11, the worm wheel 12, the threaded rod 13, the base 14 and the lifting seat 15, the lifting and lowering adjustment of the lifting seat 15 is realized by using the worm gear mechanism, so that the height of the lifting seat can be accurately adjusted, thereby accurately controlling the balance and height of the maintenance ladder; by setting the lifting seat 15 to cooperate with the telescopic ladder component 20, the stability of the ladder will not be affected during adjustment, and at the same time, by setting the base 14 to be fixed on the ground, the supporting strength of the ladder is enhanced.

[0032] In a specific embodiment of the present invention, the worm 11 in the adjustment assembly 10 has a self-locking function by itself or in combination with an external locking structure, so that the worm wheel 12 can only be driven to rotate by the worm 11, thereby avoiding the worm wheel 12 driving the worm 11 to rotate when using the aerial maintenance ladder to climb, thereby avoiding the instability of the lifting base 15.

[0033] like Figure 2 As shown, the adjustment component 10 also includes a limit block 16, which is fixedly arranged on the base 14. A limit groove 151 is provided on the inner wall of the lifting seat 15, and the limit groove 151 extends in the vertical direction. At least a part of the limit block 16 is located in the limit groove 151 and slidably cooperates with the limit groove 151; wherein, the lifting height range of the lifting seat 15 is limited by the limit block 16 respectively cooperating with the top wall and the bottom wall of the limit groove 151.

[0034] By setting the limit block 16 and the limit groove 151, the lifting height range of the lifting seat 15 is limited; by setting the limit block and the limit groove, the lifting seat is prevented from excessively rising or falling during the adjustment process, thereby ensuring the structural safety and stability of the ladder; the design of the limit structure simplifies the operating process, and there is no need to additionally judge the limit position of the lifting seat, thereby improving the efficiency and safety of ladder adjustment.

[0035] like Figure 2As shown, the adjustment component 10 also includes a handle 17, which is fixedly connected to the end of the worm 11 away from the worm wheel 12; the staff drives the worm 11 to rotate by rotating the handle 17; the adjustment component 10 also includes an anti-slip sleeve, which is detachably mounted on the outside of the handle 17, and the anti-slip sleeve is made of rubber material. The outer periphery of the anti-slip sleeve has anti-slip texture, and the anti-slip texture is used to prevent slipping.

[0036] By adding a handle 17 and an anti-slip sleeve to the adjustment component 10, the handle is fixedly connected to the worm, which is convenient for the staff to operate. At the same time, the addition of the anti-slip sleeve provides a better grip and prevents hand slippage. By setting the anti-slip sleeve, the anti-slip sleeve is made of rubber material and has anti-slip texture on the outer periphery, which further increases the friction force, ensures that the handle will not slip during operation, and improves the safety and reliability of the operation.

[0037] like Figure 3 and Figure 4 As shown, the telescopic ladder assembly 20 includes a supporting ladder structure 23, a sliding ladder structure 24 and a locking structure 25. The supporting ladder structure 23 has two ladder feet 231 at one end away from the top seat 30, and the two ladder feet 231 are respectively rotatably connected to an adjustment assembly 10; the sliding ladder structure 24 is arranged on the supporting ladder structure 23, and can slide along the extension direction of the supporting ladder structure 23, and the sliding ladder structure 24 is rotatably connected to the top seat 30; the locking structure 25 is arranged on the supporting ladder structure 23 or the sliding ladder structure 24, and is used to lock and fix the supporting ladder structure 23 and the sliding ladder structure 24; wherein, by adjusting the sliding ladder structure 24, the height of the top seat 30 is adjusted.

[0038] By setting up a telescopic ladder assembly 20 including a supporting ladder structure 23, a sliding ladder structure 24 and a locking structure 25, the height of the top seat 30 can be adjusted by adjusting the sliding ladder structure; by adjusting the sliding ladder structure, the maintenance ladder can adapt to workplaces at more heights, thereby improving the use range of the equipment without the need for complicated disassembly and assembly processes.

[0039] like Figure 4 and Figure 5As shown, the locking structure 25 includes an adjusting plate 251, a spring 252 and a clamping block 253; the supporting ladder structure 23 has an empty slot 232, and the sliding ladder structure 24 has a plurality of clamping slots 242 arranged at intervals along the extending direction of the sliding ladder; a portion of the clamping block 253 is slidably arranged in the empty slot 232, and one end is rotatably connected to the adjusting plate 251, and the two ends of the spring 252 are respectively in contact with the inner wall of the clamping block 253 and the empty slot 232, so as to provide a driving force for the other end of the clamping block 253 to extend out. The elastic force of the empty slot 232; wherein, the sliding ladder structure 24 is adjusted so that a slot 242 is correspondingly connected to the empty slot 232, and a part of the block 253 extends out of the empty slot 232 and extends into the slot 242, so that the support ladder structure 23 and the sliding ladder structure 24 are relatively fixed; the adjusting plate 251 is adjusted, and the adjusting plate 251 overcomes the elastic force of the spring 252 to pull the block 253, and the block 253 is disengaged from the slot 242, so that the support ladder structure 23 and the sliding ladder structure 24 are released from fixation.

[0040] By setting the locking structure 25, the relative fixation of the supporting ladder structure 23 and the sliding ladder structure 24 is achieved, ensuring the stable connection between the supporting ladder structure 23 and the sliding ladder structure 24, avoiding the separation of the two during use, and ensuring the safety of the staff; by setting the adjustment plate 251 to overcome the elastic force of the spring 252, the block 253 can be easily unlocked, which facilitates the adjustment and folding of the ladder.

[0041] like Figure 5 As shown, the two ends of the adjustment plate 251 are respectively an adjustment end and a supporting end, the adjustment end is used for the staff to hold, and the supporting end is provided with an arc surface 254, and the rotational connection position of the adjustment plate 251 and the clamping block 253 is located between the adjustment end and the supporting end; wherein, the adjustment plate 251 is rotated by holding the adjustment end, and the arc surface 254 on the supporting end abuts against the outer periphery of the support ladder structure 23; with the abutment position between the support end and the support ladder structure 23 as the fulcrum, the adjustment plate 251 forms a force-saving lever structure, so that the adjustment end can pull the clamping block 253 out of the clamping slot 242 with a force less than the elastic force of the spring 252.

[0042] By setting the adjustment plate 251 to form a labor-saving lever structure, the operator can use less force to release the fixation between the supporting ladder structure 23 and the sliding ladder structure 24; the design of the labor-saving lever reduces the physical strength requirement of the operation, and the operator can easily adjust the ladder, thereby improving the convenience and safety of the operation. No additional tools are required, and the adjustment can be completed only by manual operation, thereby saving adjustment time and improving work efficiency.

[0043] like Figure 1As shown, the supporting ladder structure 23 and / or the sliding ladder structure 24 is a hollow ladder structure, and the supporting ladder structure 23 is provided with a plurality of first pedal members 233 for climbing, and the plurality of first pedal members 233 are arranged at equal intervals along the extension direction of the supporting ladder structure 23; the sliding ladder structure 24 is provided with a plurality of second pedal members 241 for climbing, and the plurality of second pedal members 241 are arranged at equal intervals along the extension direction of the sliding ladder structure 24; the extension direction of the supporting ladder structure 23 is parallel to the extension direction of the sliding ladder structure 24; the spacing between two adjacent first pedal members 233 is the same as the spacing between two adjacent second pedal members 241; the climbing maintenance ladder also includes a plurality of anti-slip parts, and the first pedal member 233 and / or the second pedal member 241 are provided with anti-slip parts, and the outer periphery of the anti-slip parts has anti-slip texture, and the anti-slip texture is used for anti-slip.

[0044] By providing a supporting ladder structure 23 and a sliding ladder structure 24, and equipping with a first pedal member 233, a second pedal member 241 and anti-slip members, the practicability and safety of the ladder are improved; at the same time, the hollow design reduces the weight of the ladder, making it easy to carry and operate; the anti-slip members on the pedal members ensure that the workers' feet are stable when climbing, preventing slipping, and enhancing the safety of the ladder.

[0045] like Figure 3 As shown, the aerial maintenance ladder also includes a connecting chain 40, and the telescopic ladder assembly 20 has a connecting ring 26. The connecting chain 40 is detachably connected to the connecting rings 26 on the first telescopic ladder 21 and the second telescopic ladder 22, respectively, so as to relatively fix the first telescopic ladder 21 and the second telescopic ladder 22; wherein, by adjusting the connection length between the connecting chain 40 and the two connecting rings 26, the horizontal distance between the first adjusting member and the third adjusting member is adjusted.

[0046] By setting a connecting chain 40 to connect the two telescopic ladders, the relative fixation between the first telescopic ladder 21 and the second telescopic ladder 22 is achieved; the length of the connecting chain 40 can be adjusted, and the distance between the two telescopic ladders can be easily adjusted to adapt to different working environments; at the same time, the connection between the two telescopic ladders is strengthened, and the overall stability of the ladders is improved.

[0047] Specifically, the climbing maintenance ladder also includes a buffer, which is made of wear-resistant rubber material and is detachably arranged on the adjustment component 10; the buffer is used to contact the ground to support the adjustment component 10; the climbing maintenance ladder also includes a handle, which is arranged on the adjustment component 10 and / or the telescopic ladder component 20 to facilitate the staff to adjust and transport the climbing maintenance ladder.

[0048] By providing a buffer and a handle, the comfort and safety of the maintenance ladder are improved. The buffer is made of wear-resistant rubber material, which can provide sufficient friction when in contact with the ground to prevent the ladder from sliding and increase the stability of the ladder. By providing a handle, it is convenient for workers to hold the maintenance ladder when carrying it, especially during transportation and operation, which reduces the difficulty of operation and improves the convenience of carrying.

[0049] Now the specific working process and principle of the present invention are described in detail as follows:

[0050] When using the climbing maintenance ladder proposed in the present invention, the maintenance ladder is transported to the equipment that needs maintenance, and the height of the position that needs maintenance is observed. If the height of the maintenance ladder needs to be increased, the maintenance ladder is laid down, and then the adjustment plate 251 is rotated 90°, and then the telescopic ladder assembly 20 is adjusted to the corresponding height, and then the adjustment plate 251 is rotated and reset, and then the maintenance ladder is erected, and the adjustment assembly 10 is adjusted to drive the top seat 30 to remain horizontal; if the ground is unstable, the rotary handle 17 is rotated to drive the lifting seat 15 to rise and fall, and the maintenance ladder is kept horizontal, and then the connecting chain 40 is fixed to the connecting ring 26 of the first telescopic ladder 21 and the second telescopic ladder 22, so that the connecting chain 40 is tightened, so that the first telescopic ladder 21 and the second telescopic ladder 22 are relatively fixed, and finally the maintenance ladder is climbed with tools to carry out equipment maintenance.

[0051] In summary, the present invention provides a climbing maintenance ladder. The present invention sets four adjustment components 10, two telescopic ladder components 20 and a top seat 30 to work together, and utilizes the height adjustable function of the connection end of the adjustment component 10 and the telescopic ladder component 20 to realize flexible adjustment of the height of the two telescopic ladder components 20 close to the ground, so that the climbing maintenance ladder proposed by the present invention can adjust the balance of the standing position of the staff after standing upright, avoids the shaking of the climbing maintenance ladder, improves stability, avoids safety accidents such as tipping, and is more conducive to the work safety of the staff; utilizes the length adjustable function of the telescopic ladder component 20 to realize flexible adjustment of the upright height of the climbing maintenance ladder, so that it can be effectively applied to working environments such as mines and open-pit mines where the working height often changes; no matter the location to be repaired is high or the environment is relatively low, the smooth progress of the repair is guaranteed; the climbing maintenance ladder proposed by the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can be folded for storage and transportation, occupies a small space, is convenient to carry, and is suitable for large-scale promotion and use.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A climbing maintenance ladder, characterized in that: include: Four adjustment components (10), two telescopic ladder components (20) and a top seat (30), the four adjustment components (10) are respectively a first adjustment member, a second adjustment member, a third adjustment member and a fourth adjustment member, the two telescopic ladder components (20) are respectively a first telescopic ladder (21) and a second telescopic ladder (22); both sides of one end of the first telescopic ladder (21) are rotatably connected to the first adjustment member and the second adjustment member respectively, and the other end is rotatably connected to the top seat (30); both sides of one end of the second telescopic ladder (22) are rotatably connected to the third adjustment member and the fourth adjustment member, and the other end is rotatably connected to the top seat (30); the first telescopic ladder (21) and The second telescopic ladder (22) jointly supports the top seat (30), and the first telescopic ladder (21) and the second telescopic ladder (22) are used for workers to climb; the length of the telescopic ladder assembly (20) is adjustable; the adjustment assembly (10) is arranged on the ground, and the height of the connection end with the telescopic ladder assembly (20) is adjustable; wherein, by adjusting the four adjustment assemblies (10) respectively, the overall balance of the climbing maintenance ladder is adjusted; and the height of the top seat (30) is adjusted by adjusting at least one of the horizontal distance between the first adjustment member and the third adjustment member, the length of the first telescopic ladder (21) and the length of the second telescopic ladder (22).

2. The maintenance ladder according to claim 1, characterized in that: The adjusting assembly (10) comprises a worm (11), a worm wheel (12), a threaded rod (13), a base (14) and a lifting seat (15); the base (14) is arranged on the ground, the axial direction of the threaded rod (13) is in the vertical direction, and one end is threadedly engaged with the base (14); the other end of the threaded rod (13) is in contact with the lifting seat (15) and can rotate relative to the lifting seat (15); the worm wheel (12) is arranged on the threaded rod (13) and meshes with the worm (11); the rotation of the worm wheel (12) The moving axis is parallel or colinear with the axis of the threaded rod (13); the worm (11) is rotatably arranged on the lifting seat (15), and the rotation axis of the worm (11) is along the horizontal direction; the lifting seat (15) is rotatably connected with the telescopic ladder assembly (20) and is used to support the telescopic ladder assembly (20); wherein, by rotating the worm (11), the worm wheel (12) and the threaded rod (13) are driven to rotate, and the threaded rod (13) supports the lifting seat (15) to rise or fall, so as to adjust the overall balance of the aerial maintenance ladder.

3. The maintenance ladder according to claim 2, characterized in that: The adjustment assembly (10) further comprises a limit block (16), wherein the limit block (16) is fixedly arranged on the base (14); a limit groove (151) is provided on the inner wall of the lifting seat (15); the limit groove (151) extends in a vertical direction; at least a portion of the limit block (16) is located in the limit groove (151) and is slidably matched with the limit groove (151); wherein the lifting height range of the lifting seat (15) is limited by the limit block (16) respectively matching the top wall and the bottom wall of the limit groove (151).

4. The climbing maintenance ladder according to claim 2, characterized in that: The adjustment assembly (10) further comprises a rotary handle (17), wherein the rotary handle (17) is fixedly connected to an end of the worm (11) away from the worm wheel (12); a worker drives the worm (11) to rotate by rotating the rotary handle (17); The adjustment component (10) further comprises an anti-slip sleeve, which is detachably sleeved on the outside of the rotary handle (17), the anti-slip sleeve is made of rubber material, and the outer periphery of the anti-slip sleeve has anti-slip patterns, and the anti-slip patterns are used for anti-slipping.

5. The climbing maintenance ladder according to claim 1, characterized in that: The telescopic ladder assembly (20) comprises a supporting ladder structure (23), a sliding ladder structure (24) and a locking structure (25); the supporting ladder structure (23) has two ladder feet (231) at one end away from the top seat (30); the two ladder feet (231) are respectively rotatably connected to one of the adjustment assemblies (10); The sliding ladder structure (24) is arranged on the supporting ladder structure (23) and can slide along the extension direction of the supporting ladder structure (23); the sliding ladder structure (24) is rotatably connected to the top seat (30); the locking structure (25) is arranged on the supporting ladder structure (23) or the sliding ladder structure (24) and is used to lock and fix the supporting ladder structure (23) and the sliding ladder structure (24); wherein the height of the top seat (30) can be adjusted by adjusting the sliding ladder structure (24).

6. The climbing maintenance ladder according to claim 5, characterized in that: The locking structure (25) comprises an adjusting plate (251), a spring (252) and a clamping block (253); the supporting ladder structure (23) is provided with an empty slot (232); the sliding ladder structure (24) is provided with a plurality of clamping slots (242) at intervals along the extending direction of the sliding ladder; a part of the clamping block (253) is slidably arranged in the empty slot (232), and one end is rotatably connected to the adjusting plate (251); the two ends of the spring (252) are respectively in contact with the inner wall of the clamping block (253) and the empty slot (232) to provide a driving force for the other end of the clamping block (253) to extend out of the empty slot (232). elastic force; wherein, the sliding ladder structure (24) is adjusted so that one of the clamping slots (242) is correspondingly connected to the empty slot (232), and a portion of the clamping block (253) extends out of the empty slot (232) and extends into the clamping slot (242), so that the supporting ladder structure (23) and the sliding ladder structure (24) are relatively fixed; the adjusting plate (251) is adjusted, and the adjusting plate (251) overcomes the elastic force of the spring (252) to pull the clamping block (253), and the clamping block (253) is disengaged from the clamping slot (242), so that the supporting ladder structure (23) and the sliding ladder structure (24) are released from fixation.

7. The maintenance ladder according to claim 6, characterized in that: The two ends of the adjustment plate (251) are respectively an adjustment end and a support end, the adjustment end is used for holding by a staff member, the support end is provided with an arcuate surface (254), and the rotational connection position of the adjustment plate (251) and the clamping block (253) is located between the adjustment end and the support end; wherein, when the adjustment end is held to rotate the adjustment plate (251), the arcuate surface (254) on the support end abuts against the outer periphery of the support ladder structure (23); with the abutment position between the support end and the support ladder structure (23) as a fulcrum, the adjustment plate (251) forms a force-saving lever structure, so that the adjustment end can pull the clamping block (253) out of the clamping slot (242) with a force less than the elastic force of the spring (252).

8. The climbing maintenance ladder according to claim 5, characterized in that: The supporting ladder structure (23) and / or the sliding ladder structure (24) is a hollow ladder structure; the supporting ladder structure (23) is provided with a plurality of first pedal members (233) for climbing, and the plurality of first pedal members (233) are arranged at equal intervals along the extension direction of the supporting ladder structure (23); the sliding ladder structure (24) is provided with a plurality of second pedal members (241) for climbing, and the plurality of second pedal members (241) are arranged at equal intervals along the extension direction of the sliding ladder structure (24); the extension direction of the supporting ladder structure (23) is parallel to the extension direction of the sliding ladder structure (24); the spacing between two adjacent first pedal members (233) is the same as the spacing between two adjacent second pedal members (241); The climbing maintenance ladder also includes a plurality of anti-skid parts, the first treadle part (233) and / or the second treadle part (241) are provided with the anti-skid parts, the outer periphery of the anti-skid parts has anti-skid patterns, and the anti-skid patterns are used for anti-skid.

9. The climbing maintenance ladder according to claim 1, characterized in that: The climbing maintenance ladder also includes a connecting chain (40), and the telescopic ladder assembly (20) has a connecting ring (26). The connecting chain (40) is detachably connected to the connecting rings (26) on the first telescopic ladder (21) and the second telescopic ladder (22), respectively, so as to relatively fix the first telescopic ladder (21) and the second telescopic ladder (22); wherein the horizontal distance between the first adjusting member and the third adjusting member is adjusted by adjusting the connection length between the connecting chain (40) and the two connecting rings (26).

10. The maintenance ladder according to claim 1, characterized in that: The climbing maintenance ladder also includes a buffer, the buffer is made of wear-resistant rubber material, and the buffer is detachably arranged on the adjustment component (10); the buffer is used to contact the ground to support the adjustment component (10); The climbing and maintenance ladder also includes a handle, which is arranged on the adjustment component (10) and / or the telescopic ladder component (20) to facilitate workers to adjust and transport the climbing and maintenance ladder.

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