Liftable refueling ladder for aircraft refueling
By designing the positioning mechanism of arc blocks and arc lock strips on the gas ladder, the problem of dispersion of the gas ladder when it is not in use is solved, stable storage and convenient movement are achieved, and the service life of the ladder is improved.
Patent Information
- Application Number
- CN202422387804.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing gas elevator lacks fixation when not in use, which leads to easy shaking during movement and may cause damage.
An airplane refueling lifting gas ladder is designed, and a positioning mechanism of arc-shaped blocks and arc-shaped lock strips is adopted, so that the ladder can be fixed and stored when not in use, and the bracket is fixed by inserting the arc-shaped lock strips into the slide chute.
It improves the stability and convenience of storage of the ladder when not in use, prevents the ladder from spreading during movement, and extends the service life of the ladder.
Smart Images
Figure CN223136037U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ladders, in particular to an elevating fueling ladder for aircraft fueling. Background Art
[0002] A fueling ladder is a high-altitude equipment for fueling operations, mainly used for fueling equipment in specific scenarios.
[0003] When refueling an aircraft, the fueling ladder needs to be moved to one side of the aircraft fueling port, and then the fueling vehicle is driven near the aircraft. The staff climbs to a high altitude through the fueling ladder to connect the fueling pipe of the fueling vehicle with the aircraft fueling port for refueling.
[0004] Most of the existing fueling ladders are in a V-shaped configuration. When in use, no additional support is required and the usage environment is not restricted. However, when the existing fueling ladders are not in use, they are mostly directly placed on the fueling vehicle after being rotated and combined. But the ladder is not fixed after being stored, and the ladder will shake as the fueling vehicle moves, which is likely to damage the ladder. Therefore, we propose an elevating fueling ladder for aircraft fueling. Content of the Utility Model
[0005] The purpose of the utility model is to provide an elevating fueling ladder for aircraft fueling to solve the problems raised in the above background art.
[0006] To achieve the above purpose, the utility model provides the following technical solution: An elevating fueling ladder for aircraft fueling, comprising:
[0007] A bracket, the brackets are symmetrically arranged, and a first stepping bar is fixedly connected at intervals between two adjacent brackets. An elevating mechanism is arranged above the brackets;
[0008] A positioning mechanism, the positioning mechanism is arranged on one side of the bracket. The positioning mechanism includes a first arc-shaped block, the first arc-shaped block is fixedly connected to one side of one of the brackets, a first sliding groove is formed between the first arc-shaped block and the bracket, an arc-shaped locking bar is slidably connected to the inner wall of the first sliding groove, and a second arc-shaped block is fixedly connected to one side of the other bracket, and a second sliding groove is formed between the second arc-shaped block and the bracket.
[0009] Preferably, fixing plates are symmetrically and fixedly connected to the back of the bracket, and rollers are rotatably connected between the two fixing plates.
[0010] Preferably, the elevating mechanism includes a telescopic frame. First connecting grooves are formed on the opposite sides of the two brackets, the outer wall of the telescopic frame is slidably connected to the inner wall of the first connecting groove, a plurality of second stepping bars are fixedly connected at intervals between the two telescopic frames, a second connecting groove is formed at the top of the first stepping bar, and the second stepping bar is slidably arranged inside the second connecting groove.
[0011] Preferably, the outer wall of the telescopic frame is provided with a clamping hole, a steel ball is arranged inside the clamping hole, a spring is arranged between the steel ball and the inner wall of the clamping hole, a clamping groove is arranged on the inner wall of the first connecting groove, a countersunk head hole is arranged on the front surface of the first stepping bar, a first threaded hole is arranged on the inner wall of the countersunk head hole, a positioning bolt is threadedly connected to the inner wall of the first threaded hole, a positioning hole is arranged on the front surface of the second stepping bar, and the positioning bolt is inserted through the inner wall of the positioning hole.
[0012] Preferably, one end of the telescopic frame is fixedly connected with a first connecting plate, a connecting shaft is fixedly inserted through one side of the first connecting plate, the other end of the telescopic frame is fixedly connected with a second connecting plate, the connecting shaft is rotatably connected to one side of the second connecting plate, and a protective frame is fixedly connected between the two connecting shafts.
[0013] Preferably, the top of the telescopic frame is fixedly connected with an L-shaped clamping frame, a second threaded hole is arranged on the front surface of the L-shaped clamping frame, an adjusting bolt is threadedly connected to the inner wall of the second threaded hole, and a pressing plate is fixedly connected to one end of the adjusting bolt.
[0014] Preferably, a rotating shaft is fixedly connected between the two telescopic frames, a stepping pedal is rotatably arranged on the outer wall of the rotating shaft, an embedding groove is arranged at the bottom end of the stepping pedal, and one of the second stepping bars is inserted through the inside of the embedding groove.
[0015] The technical effects and advantages of the present utility model:
[0016] With the settings of the first arc-shaped block, the second arc-shaped block and the arc-shaped locking bar in the present utility model, when the ladder is not in use, the two legs of the ladder are aligned and stored, and then the arc-shaped locking bar rotates in the first chute and makes the arc-shaped locking bar insert into the second chute of the second arc-shaped block, so that the two brackets can be fixed, ensuring that the ladder will not spread out when not in use, thereby improving the stability of the ladder storage. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic three-dimensional structure diagram of the present utility model.
[0018] Figure 2 is a schematic side structure diagram of the present utility model.
[0019] Figure 3 is a Figure 1 partial enlarged structure diagram at A of the present utility model.
[0020] Figure 4 is a Figure 1 partial enlarged structure diagram at B of the present utility model.
[0021] Figure 5 For the present utility model Figure 1 is a partial enlarged structural schematic diagram of part C of the present utility model.
[0022] Figure 6 is a side sectional structural schematic diagram of the second tread bar of the present utility model.
[0023] Figure 7 is a top sectional structural schematic diagram of the telescopic frame of the present utility model.
[0024] In the figure: 101, support; 102, first tread bar; 201, first arc-shaped block; 202, arc-shaped locking bar; 203, second arc-shaped block; 301, fixing plate; 302, roller; 401, first connection groove; 402, telescopic frame; 403, second connection groove; 404, second tread bar; 405, countersunk hole; 406, first threaded hole; 407, positioning hole; 408, clamping hole; 409, steel ball; 410, spring; 411, clamping groove; 412, positioning bolt; 501, first connecting plate; 502, second connecting plate; 503, connecting shaft; 504, protective frame; 601, L-shaped clamping frame; 602, adjusting bolt; 603, pressing plate; 701, pedal; 702, rotating shaft; 703, embedding groove. Specific embodiments
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0026] The present utility model provides a liftable refueling ladder for aircraft refueling as shown in Figure 1-7 the figure, which includes a support 101 and a positioning mechanism. The supports 101 are symmetrically arranged, and a first tread bar 102 is fixedly connected at intervals between two adjacent supports 101. An elevating mechanism is arranged above the support 101, and the ladder can be extended for use through the elevating mechanism, with stronger applicability;
[0027] In a preferred embodiment, the positioning mechanism is arranged on one side of the bracket 101. The positioning mechanism includes a first arc-shaped block 201. The first arc-shaped block 201 is fixedly connected to one side of the bracket 101. A first sliding groove is formed between the first arc-shaped block 201 and the bracket 101. An arc-shaped locking bar 202 is slidably connected to the inner wall of the first sliding groove. A second arc-shaped block 203 is fixedly connected to one side of the other bracket 101. A second sliding groove is formed between the second arc-shaped block 203 and the bracket 101. When the ladder is not in use, align the two legs of the ladder for storage, then rotate the arc-shaped locking bar 202 in the first sliding groove and insert the arc-shaped locking bar 202 into the second sliding groove of the second arc-shaped block 203, so that the two brackets 101 can be fixed, and the ladder will not spread when not in use, thus improving the stability of the ladder storage.
[0028] Wherein, fixing plates 301 are symmetrically and fixedly connected to the back surface of the bracket 101. A roller 302 is rotatably connected between the two fixing plates 301. Through the arrangement of the roller 302, the ladder can be moved through the roller 302, improving the convenience of the ladder movement.
[0029] Wherein, the lifting mechanism includes a telescopic frame 402. First connection grooves 401 are formed on the opposite sides of the two brackets 101. The outer wall of the telescopic frame 402 is slidably connected to the inner wall of the first connection groove 401. A plurality of second stepping strips 404 are fixedly connected at intervals between the two telescopic frames 402. A second connection groove 403 is formed at the top end of the first stepping strip 102. The second stepping strip 404 is slidably arranged inside the second connection groove 403. By moving the telescopic frame 402 in the first connection groove 401, the use length of the ladder can be adjusted.
[0030] Wherein, a clamping hole 408 is formed on the outer wall of the telescopic frame 402. A steel ball 409 is arranged inside the clamping hole 408. A spring 410 is arranged between the steel ball 409 and the inner wall of the clamping hole 408. A clamping groove 411 is formed on the inner wall of the first connection groove 401. A countersunk hole 405 is formed on the front surface of the first stepping strip 102. A first threaded hole 406 is formed on the inner wall of the countersunk hole 405. A positioning bolt 412 is threadedly connected to the inner wall of the first threaded hole 406. A positioning hole 407 is formed on the front surface of the second stepping strip 404. The positioning bolt 412 is inserted through the inner wall of the positioning hole 407. When the telescopic frame 402 moves in the first connection groove 401, after the second stepping strip 404 is inserted into one of the second connection grooves 403, at this time, under the elastic action of the spring 410, the steel ball 409 pops out and impacts the inner wall of the clamping groove 411 to generate a sound to remind the staff. Then, turn the positioning bolt 412 in the first threaded hole 406 until the positioning bolt 412 is inserted into the positioning hole 407, so as to position the adjusted ladder and make the ladder can be used stably.
[0031] Among them, one end of a telescopic frame 402 is fixedly connected with a first connecting plate 501. One side of the first connecting plate 501 is fixedly inserted and connected with a connecting shaft 503. The end of the other telescopic frame 402 is fixedly connected with a second connecting plate 502. The connecting shaft 503 is rotatably connected to one side of the second connecting plate 502. A protective frame 504 is fixedly connected between the two connecting shafts 503. Through the setting of the connecting shaft 503, the ladder can be rotated for storage, and through the setting of the protective frame 504, the staff standing on the ladder can be protected.
[0032] Among them, the top of the telescopic frame 402 is fixedly connected with an L-shaped clamping frame 601. A second threaded hole is opened on the front surface of the L-shaped clamping frame 601. The inner wall of the second threaded hole is threadedly connected with an adjusting bolt 602. One end of the adjusting bolt 602 is fixedly connected with a pressing plate 603. When the ladder is not in use, it can be clamped on the refueling vehicle through the L-shaped clamping frame 601, and then the adjusting bolt 602 is tightened in the second threaded hole, so that the pressing plate 603 presses against the refueling vehicle, so that the ladder after storage can be stably hung on the refueling vehicle, improving the convenience of moving the refueling ladder.
[0033] Among them, a rotating shaft 702 is fixedly connected between the two telescopic frames 402. A pedal 701 is rotatably arranged on the outer wall of the rotating shaft 702. A groove 703 is opened at the bottom end of the pedal 701. One of the second stepping strips 404 is inserted into the groove 703. When the ladder is in use, the pedal 701 rotates around the rotating shaft 702 until the groove 703 catches the corresponding second stepping strip 404, so that the pedal 701 can be positioned, facilitating the staff to stand on the pedal 701 for refueling operations.
[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An aircraft refueling liftable refueling ladder, characterized in that, Including: A bracket (101), the brackets (101) are symmetrically arranged, and a first stepping bar (102) is fixedly connected at intervals between two adjacent brackets (101). An elevating mechanism is arranged above the bracket (101). A positioning mechanism, the positioning mechanism is arranged on one side of the bracket (101). The positioning mechanism includes a first arc-shaped block (201), the first arc-shaped block (201) is fixedly connected to one side of one of the brackets (101). A first sliding groove is formed between the first arc-shaped block (201) and the bracket (101). An arc-shaped locking bar (202) is slidably connected to the inner wall of the first sliding groove. A second arc-shaped block (203) is fixedly connected to one side of the other bracket (101). A second sliding groove is formed between the second arc-shaped block (203) and the bracket (101).
2. The aircraft refueling liftable refueling ladder according to claim 1, wherein, Fixing plates (301) are symmetrically and fixedly connected to the back surface of the bracket (101). A roller (302) is rotatably connected between the two fixing plates (301).
3. The aircraft refueling liftable refueling ladder according to claim 1, characterized in that, The elevating mechanism includes a telescopic frame (402). First connecting grooves (401) are formed on the opposite sides of the two brackets (101). The outer wall of the telescopic frame (402) is slidably connected to the inner wall of the first connecting groove (401). A plurality of second stepping bars (404) are fixedly connected at intervals between the two telescopic frames (402). A second connecting groove (403) is formed at the top end of the first stepping bar (102). The second stepping bar (404) is slidably arranged inside the second connecting groove (403).
4. The aircraft refueling liftable refueling ladder according to claim 3, wherein, A clamping hole (408) is formed on the outer wall of the telescopic frame (402). A steel ball (409) is arranged inside the clamping hole (408). A spring (410) is arranged between the steel ball (409) and the inner wall of the clamping hole (408). A clamping groove (411) is formed on the inner wall of the first connecting groove (401). A counterbore (405) is formed on the front surface of the first stepping bar (102). A first threaded hole (406) is formed on the inner wall of the counterbore (405). A positioning bolt (412) is threadedly connected to the inner wall of the first threaded hole (406). A positioning hole (407) is formed on the front surface of the second stepping bar (404). The positioning bolt (412) is inserted through the inner wall of the positioning hole (407).
5. The aircraft refueling liftable refueling ladder according to claim 3, wherein, A first connecting plate (501) is fixedly connected to the end of one of the telescopic frames (402). A connecting shaft (503) is fixedly inserted through one side of the first connecting plate (501). A second connecting plate (502) is fixedly connected to the end of the other telescopic frame (402). The connecting shaft (503) is rotatably connected to one side of the second connecting plate (502). A protective frame (504) is fixedly connected between the two connecting shafts (503).
6. The aircraft refueling liftable refueling ladder according to claim 3, wherein, The top of the telescopic frame (402) is fixedly connected with an L-shaped clamping frame (601). A second threaded hole is formed in the front surface of the L-shaped clamping frame (601). The inner wall of the second threaded hole is threadedly connected with an adjusting bolt (602). One end of the adjusting bolt (602) is fixedly connected with a pressing plate (603).
7. The aircraft refueling liftable refueling ladder according to claim 3, wherein A rotating shaft (702) is fixedly connected between the two telescopic frames (402). A pedal (701) is rotatably arranged on the outer wall of the rotating shaft (702). A slot (703) is formed in the bottom end of the pedal (701). One of the second stepping strips (404) is inserted into the slot (703).