Elevator

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator which comprises a follow-up escalator assembly and two lead screw lifting assemblies, the upper end of the follow-up escalator assembly is movably provided with two aluminum profile ladder frames through bearings, and the two aluminum profile ladder frames are connected with the lead screw lifting assemblies through bearings. A plurality of ladder rods are jointly and fixedly connected between the two aluminum profile ladder assemblies, an aluminum profile platform is jointly and fixedly installed at the upper ends of the two lead screw lifting assemblies, and two steel wire ropes are fixedly installed on the right portion of the lower end of the aluminum profile platform. According to the elevator, the follow-up escalator assembly and the lead screw lifting assembly are connected through the steel wire rope, movement collaboration of the follow-up escalator assembly and the lead screw lifting assembly is achieved, when the lead screw lifting assembly drives an aluminum profile platform to ascend and descend, the follow-up escalator assembly can move stably along with the aluminum profile platform, convenience and safety of operators in ascending and descending are guaranteed, and in the ascending and descending process, the follow-up escalator assembly and the lead screw lifting assembly can move stably. The follow-up staircase keeps a proper distance and angle with the platform all the time, so that people can pass through conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of elevating ladders, and particularly relates to an elevating ladder. Background Art

[0002] With the rapid development of the aviation industry, the safety and maintenance of aircraft have become crucial. During the aircraft maintenance process, maintenance personnel need to be able to conveniently, safely, and accurately reach various parts of the aircraft for inspection, repair, and maintenance work. Elevating ladders are commonly used in aircraft maintenance, but traditional elevating ladders still have the following deficiencies: During the use of traditional elevating ladders, the staff needs to use one foot as a support for movement, and the relative distance between the person and the ladder will repeatedly move away from and approach, which is likely to cause the ladder to shake. Especially as the climbing height increases, the sway of the ladder may become more obvious, thus posing a safety hazard. Therefore, we introduce an elevating ladder. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide an elevating ladder, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An elevating ladder includes a follow-up escalator assembly and a screw-lift assembly. There are two screw-lift assemblies. A number of brake wheel sets are fixedly installed at the lower ends of both screw-lift assemblies. The upper end of the follow-up escalator assembly is movably installed with two aluminum alloy ladder frames through bearings. A number of ladder rods are fixedly connected between the two aluminum alloy ladder frames. Aluminum alloy escalator handrails are fixedly connected to the front and rear ends of the two aluminum alloy ladder frames. An aluminum alloy platform is fixedly installed at the upper ends of the two screw-lift assemblies. Two steel wire ropes are fixedly installed at the lower right part of the aluminum alloy platform. Platform aluminum alloy handrails are fixedly connected to the upper ends of the aluminum alloy platform. A hand-crank mechanism assembly is threadedly connected to the lower ends of both screw-lift assemblies. Aluminum alloy safety doors are movably installed at the front and right ends of the platform aluminum alloy handrails through hinges.

[0006] Preferably, the upper parts of the inner sides of the two aluminum alloy ladder frames are respectively movably connected to the front and rear ends of the aluminum alloy platform through bearings.

[0007] By adopting the above technical solution: The bearing connection enables the aluminum alloy ladder frame to flexibly and adaptively adjust according to the lifting angle and position of the aluminum alloy platform, adapting to different working requirements and operation scenarios.

[0008] Preferably, the left ends of the two steel wire ropes are fixedly connected to the right end of the follow-up escalator assembly.

[0009] By adopting the above technical solution: Through the connection of the steel wire rope, the follow-up escalator assembly and the aluminum profile platform can achieve better coordinated operation. During the lifting process, the steel wire rope can help maintain the relative position and motion synchronization between the two, ensuring that users can smoothly go up and down on the follow-up escalator, and at the same time facilitating the stable transportation of goods.

[0010] Preferably, drive wheels are fixedly connected to the lower parts of the left ends of the two hand-operating mechanism assemblies, and the lower right part of the steel wire rope is drivingly connected to the outer surface of the drive wheel.

[0011] By adopting the above technical solution: Through the guiding and constraining of the drive wheel, the movement trajectory of the steel wire rope is more stable, reducing the jumping and deviation of the steel wire rope during the transmission process, and contributing to maintaining the stability and reliability of the elevator operation.

[0012] Preferably, the hand-operating mechanism assembly includes an outer box, a worm is inserted and movably installed at the right end of the outer box, a turbine is drivingly connected to the outer surface of the worm, a hand crank is fixedly connected to the right end of the worm, and the upper end of the turbine is threadedly connected to the lower end of the screw lift assembly.

[0013] By adopting the above technical solution: The operator can finely adjust the lifting height of the elevator by rotating the hand crank and can accurately reach the required maintenance position.

[0014] Preferably, the left end of the worm is movably connected to the left inner wall surface of the outer box through a bearing, and the lower end of the turbine is movably connected to the lower inner wall surface of the outer box through a bearing.

[0015] By adopting the above technical solution: The left end of the worm is movably connected to the left inner wall surface of the outer box through a bearing, and the lower end of the turbine is movably connected to the lower inner wall surface of the outer box through a bearing, significantly reducing the friction between the worm and the turbine and the inner wall of the outer box during rotation.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. In the present utility model, the follow-up escalator assembly and the screw lift assembly are connected by a steel wire rope, achieving the coordination of their movements. When the screw lift assembly drives the aluminum profile platform to lift, the follow-up escalator assembly can move smoothly accordingly, ensuring the convenience and safety of the operator going up and down. During the lifting process, the follow-up escalator always maintains an appropriate distance and angle from the platform, facilitating personnel passage;

[0018] 2. In the present utility model, the hand-operating mechanism assembly threadedly connected to the screw lift assembly enables the lifting operation of the elevator to be manually controlled, facilitating fine adjustment according to actual needs and being able to work properly without power supply;

[0019] 3. In the present utility model, the aluminum profile handrail of the escalator and the aluminum profile handrail of the platform provide good grasping and support for the operator, enhancing the comfort and safety of operation. When the operator climbs up and down the ladder or works on the platform, it can stabilize the body and reduce the risk of accidental falls. The aluminum profile safety doors at the front end and the right end of the platform aluminum profile handrail can prevent the operator from accidentally falling from the platform, further improving the safety of maintenance work. When the platform rises to a relatively high position, the safety door can effectively prevent people from falling by mistake. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a lifting ladder of the present utility model;

[0021] Figure 2 is a left side plan view of a lifting ladder of the present utility model;

[0022] Figure 3 is a Figure 1 magnified view of the structure at position A in a lifting ladder of the present utility model;

[0023] Figure 4 is a Figure 1 magnified view of the structure at position B in a lifting ladder of the present utility model;

[0024] Figure 5 is a Figure 2 magnified view of the structure at position C in a lifting ladder of the present utility model;

[0025] Figure 6 is a schematic diagram of the overall structure of the manual mechanism assembly of a lifting ladder of the present utility model.

[0026] In the figure: 1. Follow-up escalator assembly; 2. Lead screw lifting assembly; 3. Brake wheel set with belt; 4. Steel wire rope; 41. Driving wheel; 5. Aluminum profile ladder; 6. Aluminum profile handrail of the escalator; 7. Aluminum profile platform; 8. Aluminum profile handrail of the platform; 9. Manual mechanism assembly; 10. Aluminum profile safety door; 11. Ladder rod; 91. Outer box; 92. Worm; 93. Turbine; 94. Crank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0031] A lift, comprising a follow-up escalator assembly 1 and a lead screw lifting assembly 2. There are two lead screw lifting assemblies 2. A plurality of brake wheel sets 3 are fixedly installed at the lower ends of the two lead screw lifting assemblies 2 and the lower ends of the lead screw lifting assemblies 2. The upper end of the follow-up escalator assembly 1 is movably installed with two aluminum alloy ladder frames 5 through bearings. A plurality of ladder rods 11 are fixedly connected between the two aluminum alloy ladder frames 5. Aluminum alloy escalator handrails 6 are fixedly connected to the front ends and rear ends of the two aluminum alloy ladder frames 5. The upper ends of the two lead screw lifting assemblies 2 are fixedly installed with an aluminum alloy platform 7. Two steel wire ropes 4 are fixedly installed at the right part of the lower end of the aluminum alloy platform 7. Platform aluminum alloy handrails 8 are fixedly connected to the upper ends of the aluminum alloy platform 7. Hand-crank mechanism assemblies 9 are threadedly connected to the lower ends of the two lead screw lifting assemblies 2. Aluminum alloy safety doors 10 are movably installed at the front end and the right end of the platform aluminum alloy handrails 8 through hinges.

[0032] In this embodiment, the upper parts of the inner sides of the two aluminum profile ladders 5 are respectively and movably connected to the front end and the rear end of the aluminum profile platform 7 through bearings; the left ends of the two steel wire ropes 4 are fixedly connected to the right end of the follow-up escalator assembly 1; the lower parts of the left ends of the two hand-crank mechanism assemblies 9 are fixedly connected with transmission wheels 41, and the lower right part of the steel wire rope 4 is drivingly connected to the outer surface of the transmission wheel 41; the hand-crank mechanism assembly 9 includes an outer box 91, a worm 92 is inserted and movably installed at the right end of the outer box 91, a turbine 93 is drivingly connected to the outer surface of the worm 92, a crank 94 is fixedly connected to the right end of the worm 92, and the upper end of the turbine 93 is threadedly connected to the lower end of the screw lift assembly 2; the left end of the worm 92 is movably connected to the left inner wall surface of the outer box 91 through a bearing, and the lower end of the turbine 93 is movably connected to the lower inner wall surface of the outer box 91 through a bearing.

[0033] It should be noted that the present utility model is a lifting ladder. When moving the lifting ladder, loosen the brake on the brake wheel set 3 to facilitate moving the lifting ladder to the designated position, and then lock the brake on the brake wheel set 3. The aluminum profile ladder 5 and the ladder rod 11 provide a passage for people to go up and down. The aluminum profile escalator handrail 6 provides a hand support for people walking on the ladder rod 11 of the aluminum profile ladder 5 to ensure the safety of people. The staff climbs onto the aluminum profile platform 7 through the ladder rod 11 on the aluminum profile ladder 5 to work. When the staff is working on the aluminum profile platform 7, the aluminum profile safety door 10 can be closed and cooperate with the platform aluminum profile handrail 8 to prevent people from accidentally falling and ensure the life safety of people. When it is necessary to increase the working height, first unlock the brake of the brake wheel set 3 under the follow-up escalator assembly 1, and then the operator rotates the crank 94 in the hand-crank mechanism assembly 9 to drive the worm 92 to rotate. The rotation of the worm 92 drives the turbine 93 connected to it to rotate. Since the upper end of the turbine 93 is threadedly connected to the lower end of the screw lift assembly 2, the rotation of the turbine 93 will cause the screw lift assembly 2 to perform a linear motion of rising or falling. The synchronous motion of the two screw lift assemblies 2 drives the aluminum profile platform 7 to rise or fall. At the same time, the steel wire rope 4 is tightened upward, and the inclination angle of the aluminum profile ladder 5 increases to keep the aluminum profile platform 7 horizontal, ensuring that the relative positions of the follow-up escalator assembly 1, the aluminum profile ladder 5, the ladder rod 11 and the aluminum profile platform 7 are coordinated to provide a stable up and down passage. When it is necessary to adjust the working height downward, shake the hand-crank mechanism assembly 9 to drive it to descend, drive the aluminum profile platform 7 to descend, and at the same time the steel wire rope 4 moves downward and relaxes, and the inclination angle of the aluminum profile ladder 5 decreases to keep the aluminum profile platform 7 horizontal. Whether the aluminum profile platform 7 rises or falls, the aluminum profile ladder 5 and the ladder rod 11 always remain horizontal to ensure the stability of the aluminum profile platform 7.

[0034] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator, comprising a follower escalator assembly (1) and a lead screw elevator assembly (2), characterized in that: The screw lifting assemblies (2) are provided with two, and the lower ends of the two screw lifting assemblies (2) and the lower ends of the screw lifting assemblies (2) are fixedly mounted with a plurality of wheel assemblies (3) with brakes. The upper end of the follow-up escalator assembly (1) is movably mounted with two aluminum profile ladder frames (5) through bearings, and the two aluminum profile ladder frames (5) are commonly fixedly connected with a plurality of ladder rods (11). The front and rear ends of the two aluminum profile ladder frames (5) are both fixedly connected with aluminum profile escalator handrails (6). The upper ends of the two screw lifting assemblies (2) are commonly fixedly mounted with an aluminum profile platform (7), and the right part of the lower end of the aluminum profile platform (7) is fixedly mounted with two steel wire ropes (4), and the upper end of the aluminum profile platform (7) is commonly fixedly connected with a platform aluminum profile handrail (8). The lower ends of the two screw lifting assemblies (2) are both threadedly connected with a hand-cranked mechanism assembly (9), and the front and right ends of the platform aluminum profile handrail (8) are both movably mounted with an aluminum profile safety door (10) through hinges.

2. The elevator according to claim 1, characterized in that: The upper parts of the inner side surfaces of the two aluminum profile ladder frames (5) are movably connected to the front end and the rear end of the aluminum profile platform (7) respectively through bearings.

3. The elevator according to claim 1, characterized in that: The left ends of the two steel wire ropes (4) are fixedly connected to the right end of the follower escalator assembly (1).

4. The elevator according to claim 1, characterized in that: The lower left ends of the two hand-cranked mechanism assemblies (9) are fixedly connected to a transmission wheel (41), and the lower right portion of the steel wire rope (4) is transmission-connected to the outer surface of the transmission wheel (41).

5. The elevator according to claim 1, characterized in that: The hand-cranked mechanism assembly (9) comprises an outer box (91), a worm (92) being movably installed through the right end of the outer box (91), a turbine (93) being transmission-connected to the outer surface of the worm (92), a crank handle (94) being fixedly connected to the right end of the worm (92), and the upper end of the turbine (93) being threadedly connected to the lower end of the lead screw lifting assembly (2).

6. The elevator according to claim 5, characterized in that: The left end of the worm (92) is movably connected to the left inner wall surface of the outer box (91) through a bearing, and the lower end of the turbine (93) is movably connected to the lower inner wall surface of the outer box (91) through a bearing.

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