Automatic specified height lifting device for lifting platform of aircraft sewage vehicle

Abstract

The utility model relates to the technical field of airport auxiliary equipment, and discloses an airplane sewage vehicle lifting platform automatic lifting specified height device which comprises a lifting shell and a hydraulic cylinder fixedly connected to the bottom end of the inner wall of the lifting shell. A hydraulic cylinder is started to drive a supporting connecting plate and a platform to move upwards, so that a sliding frame and a designated inserting rod are driven to move upwards, the sliding frame and the designated inserting rod make contact with each other and are extruded by the inner wall of a designated inserting hole, the designated inserting rod is driven to telescopically slide on the inner wall of a sliding sleeve, and meanwhile a second spring is extruded; and when the jack moves to the next designated jack, the second spring rebounds and resets to push the designated insertion rod to be inserted into the designated jack, sound and blocking feeling are generated, a worker is prompted to complete rising of a designated distance, the rising distance can be accurately controlled, and the situation that the worker controls the rising distance inaccurately is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of airport auxiliary equipment, and specifically relates to a device for automatically lifting an aircraft sewage truck lifting platform to a specified height. Background Art

[0002] An aircraft sewage truck is a special vehicle on the ground that is used to receive and store the sewage and dirt discharged from the aircraft toilets and add clean water to the toilets. It is a special vehicle that must be equipped to ensure the normal operation of flights and provide ground services for aircraft. When an aircraft lands after a long flight, the sewage stored in the on-board toilets and washrooms needs to be drained in time to ensure the normal use of subsequent flights. While the sewage truck provides sewage disposal services for various aircraft, it is also used for flushing the on-board toilets, adding cleaning water, and transporting the sewage on the ground and discharging it to a designated location.

[0003] When the existing aircraft sewage lifting platform is lifted or lowered, it directly goes up and down, and the height of the platform is controlled by the feeling of the staff during the lifting and lowering process. This will result in the height of the lifting being either too high or too low, so that the staff needs to repeatedly adjust the height of the platform, which is not convenient for the staff to use.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] To solve the above technical problems that when the existing aircraft sewage lifting platform is lifted or lowered, it directly goes up and down, and the height of the platform is controlled by the feeling of the staff during the lifting and lowering process, which will result in the height of the lifting being either too high or too low, so that the staff needs to repeatedly adjust the height of the platform, which is not convenient for the staff to use, the basic concept of the technical solution adopted by the present utility model is as follows:

[0006] An automatic lifting device for an aircraft sewage truck lifting platform to a specified height, comprising a lifting outer shell;

[0007] A hydraulic cylinder fixedly connected to the bottom end of the inner wall of the lifting outer shell, a specified lifting mechanism is arranged inside the lifting outer shell, a release mechanism is arranged on the specified lifting mechanism, and the specified lifting mechanism includes a support connecting plate fixedly connected to the outer wall of the output end of the hydraulic cylinder:

[0008] One end of the support connecting plate away from the output end of the hydraulic cylinder is fixedly connected with a platform, a sliding frame is fixedly connected to the outer wall of the support connecting plate, a first spring is fixedly connected to the inner wall of the sliding frame, a sliding sleeve is fixedly connected to one end of the first spring away from the inner wall of the sliding frame, a second spring is fixedly connected to the inner wall of the sliding sleeve, a specified insertion rod is fixedly connected to one end of the second spring away from the inner wall of the sliding sleeve, a slope is arranged at one end of the specified insertion rod away from the second spring, and a specified insertion hole is arranged on the inner wall of the lifting outer shell.

[0009] As a preferred embodiment of the present utility model, the unlocking mechanism includes a limit sliding groove opened at the top end of the support connecting plate. A slider is slidably connected to the inner wall of the limit sliding groove. A top block is fixedly connected to the top end of the slider. An unlocking hole is opened on the outer wall of the top block. One end of the outer wall of the top block is rotatably connected to a lead screw through a bearing. The outer wall of the lead screw is threadedly connected to the outer wall of the platform. A connecting plate is fixedly connected to the top end of the sliding sleeve. A connecting rod is fixedly connected to the outer wall of the connecting plate. A convex block is fixedly connected to one end of the connecting rod away from the connecting plate.

[0010] As a preferred embodiment of the present utility model, the number of the designated insertion rods is two, and the designated insertion rods are distributed symmetrically left and right on the left and right sides of the support connecting plate.

[0011] As a preferred embodiment of the present utility model, the number of the designated insertion holes is several, and the inner wall of the designated insertion hole is fitted with the outer wall of the designated insertion rod.

[0012] As a preferred embodiment of the present utility model, the outer wall of the sliding sleeve is fitted with the inner wall of the sliding frame.

[0013] As a preferred embodiment of the present utility model, one end of the top block away from the lead screw is arc-shaped, and the inner wall of the unlocking hole is fitted with the outer wall of the connecting rod.

[0014] As a preferred embodiment of the present utility model, the number of the connecting rods and the unlocking holes is two respectively, and the connecting rods and the unlocking holes are distributed symmetrically left and right on the left and right sides of the top block.

[0015] The present utility model has the following beneficial effects compared with the prior art:

[0016] In the present utility model, the staff starts the hydraulic cylinder, and its output end will drive the support connecting plate to move up or down. When the support connecting plate moves up, it can drive the platform to move up. At the same time, during the movement of the support connecting plate, it will drive the sliding frame to move up, thereby driving the sliding sleeve and the designated insertion rod to move up. When the designated insertion rod moves up, the inclined surface provided on the outer wall of its top end will contact and be squeezed by the inner wall of the designated insertion hole, so as to drive the designated insertion rod to slide telescopically inside the sliding sleeve. During the retracting sliding process, it will squeeze the second spring, so as to disengage from the current designated insertion hole. As it continues to move up, when driving the designated insertion rod to move to the next designated insertion hole, the second spring will rebound and push the designated insertion rod into the designated insertion hole, thereby generating a sound and a blocking feeling, prompting the staff to complete a certain specified distance of ascent. In this way, the ascending distance can be accurately controlled, preventing the inaccuracy of the staff in controlling the ascending distance.

[0017] In this utility model, first, rotate the lead screw to drive the top block to move forward. When the top block moves forward, it will drive the release hole to move. Until the release hole moves to the position of the convex block, the first spring rebounds to drive the connecting rods on both sides and the convex block to move closer to the middle. As a result, the connecting rods are inserted into the inner wall of the release hole. The movement of the connecting plate drives the sliding sleeve to contract, and the sliding sleeve drives the designated insertion rod to retract, so that it disengages from the inner wall of the designated insertion hole. In this way, during the descent process, the designated insertion rod will not play a positioning role, making the descent of the platform smoother.

[0018] The following further describes in detail the specific implementation manners of this utility model with reference to the accompanying drawings. Description of the Drawings

[0019] In the drawings:

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

[0021] Figure 2 is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 is a schematic diagram of the designated lifting mechanism structure of this utility model;

[0023] Figure 4 is a schematic diagram of the release mechanism structure of this utility model.

[0024] In the figure: 1, lifting outer shell; 2, hydraulic cylinder; 31, designated lifting mechanism; 311, support connecting plate; 312, platform; 313, sliding frame; 314, first spring; 315, sliding sleeve; 316, second spring; 317, designated insertion rod; 318, inclined surface setting; 319, designated insertion hole; 32, release mechanism; 321, limit sliding groove; 322, slider; 323, top block; 324, release hole; 325, lead screw; 326, connecting plate; 327, connecting rod; 328, convex block. Specific Implementation Manner

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of this utility model with reference to the accompanying drawings in the embodiments of this utility model. The following embodiments are used to illustrate this utility model.

[0026] As Figures 1 to 4As shown in the figure, an automatic lifting device for an aircraft sewage truck lifting platform to a specified height includes a lifting housing 1, a hydraulic cylinder 2 fixedly connected to the bottom end of the inner wall of the lifting housing 1, a specified lifting mechanism 31 is arranged inside the lifting housing 1, and a release mechanism 32 is arranged on the specified lifting mechanism 31. The specified lifting mechanism 31 includes a support connecting plate 311 fixedly connected to the outer wall of the output end of the hydraulic cylinder 2. One end of the support connecting plate 311 away from the output end of the hydraulic cylinder 2 is fixedly connected with a platform 312. A sliding frame 313 is fixedly connected to the outer wall of the support connecting plate 311. A first spring 314 is fixedly connected to the inner wall of the sliding frame 313. One end of the first spring 314 away from the inner wall of the sliding frame 313 is fixedly connected with a sliding sleeve 315. A second spring 316 is fixedly connected to the inner wall of the sliding sleeve 315. One end of the second spring 316 away from the inner wall of the sliding sleeve 315 is fixedly connected with a specified insertion rod 317. An inclined surface 318 is arranged at one end of the specified insertion rod 317 away from the second spring 316. A specified insertion hole 319 is arranged on the inner wall of the lifting housing 1.

[0027] Further, the number of the specified insertion rods 317 is two, and the specified insertion rods 317 are symmetrically distributed on the left and right sides of the support connecting plate 311 in a left-right symmetrical structure, so as to support the left and right sides of the support connecting plate 311 synchronously and evenly, and further improve its stability.

[0028] Further, the number of the specified insertion holes 319 is several, and the inner wall of the specified insertion hole 319 is fitted with the outer wall of the specified insertion rod 317, so as to ensure that the adjustment of the specified height can be carried out in multiple gears to adapt to different working heights.

[0029] Furthermore, the outer wall of the sliding sleeve 315 is fitted with the inner wall of the sliding frame 313, so as to ensure the tight fit between the inner wall of the sliding frame 313 and the outer wall of the sliding sleeve 315, and thus ensure the movement stability between the two.

[0030] The release mechanism 32 includes a limit sliding groove 321 opened at the top end of the support connecting plate 311. A slider 322 is slidably connected to the inner wall of the limit sliding groove 321. A top block 323 is fixedly connected to the top end of the slider 322. A release hole 324 is opened on the outer wall of the top block 323. One end of the outer wall of the top block 323 is rotatably connected with a lead screw 325 through a bearing. The outer wall of the lead screw 325 is threadedly connected to the outer wall of the platform 312. A connecting plate 326 is fixedly connected to the top end of the sliding sleeve 315. A connecting rod 327 is fixedly connected to the outer wall of the connecting plate 326. One end of the connecting rod 327 away from the connecting plate 326 is fixedly connected with a convex block 328.

[0031] Further, one end of the top block 323 away from the lead screw 325 is arranged in an arc shape, and the inner wall of the release hole 324 is fitted with the outer wall of the connecting rod 327. By arranging the arc shape, the extrusion effect can be formed with the convex block 328 to facilitate the extrusion of the specified insertion rods 317 on both sides to move.

[0032] Further, the number of the connecting rods 327 and the release holes 324 is two respectively. The connecting rods 327 and the release holes 324 are symmetrically distributed on the left and right sides of the top block 323 in a left-right symmetrical structure, so that the specified insertion rod 317 can be released synchronously on both the left and right sides.

[0033] The implementation principle of an automatic lifting device for an aircraft sewage truck lifting platform to a specified height in this embodiment is as follows: When lifting, the staff starts the hydraulic cylinder 2, and its output end will drive the support connecting plate 311 to move up or down. When the support connecting plate 311 moves upward, it can drive the platform 312 to move upward. At the same time, during the movement of the support connecting plate 311, the sliding frame 313 will be driven to move upward, thereby driving the sliding sleeve 315 and the specified insertion rod 317 to move upward. When the specified insertion rod 317 moves upward, the inclined surface 318 provided on the outer wall of its top end will contact and be squeezed by the inner wall of the specified insertion hole 319, thereby driving the specified insertion rod 317 to slide telescopically inside the sliding sleeve 315. During the retraction sliding process, the second spring 316 will be squeezed, so as to disengage from the current specified insertion hole 319. As it continues to move upward and drives the specified insertion rod 317 to move to the next specified insertion hole 319, the second spring 316 will rebound and reset to push the specified insertion rod 317 into the specified insertion hole 319. In this way, a sound and a blocking feeling will be generated, prompting the staff to complete an ascent of a specified distance. In this way, the ascending distance can be accurately controlled to prevent the inaccuracy of the staff in controlling the ascending distance.

[0034] When controlling the platform 312 to descend, first rotate the lead screw 325 to drive the top block 323 to move forward. When the top block 323 moves forward, it will drive the release hole 324 to move. Until the release hole 324 moves to the position of the convex block 328, through the rebound of the first spring 314, the connecting rods 327 and the convex block 328 on both sides can be driven to move closer to the middle, so that the connecting rods 327 are inserted into the inner wall of the release hole 324. By the movement of the connecting plate 326, the sliding sleeve 315 can be driven to contract, so that the sliding sleeve 315 drives the specified insertion rod 317 to retract so as to disengage from the inner wall of the specified insertion hole 319. In this way, during the descending process, the specified insertion rod 317 will not form a positioning effect, making the descending process of the platform 312 smoother.

Claims

1. A device for automatically raising and lowering a lifting platform of an aircraft sewage truck to a specified height, comprising a lifting shell (1); The hydraulic cylinder (2) is fixedly connected to the bottom end of the inner wall of the lifting shell (1), and is characterized in that: A designated lifting mechanism (31) is arranged inside the lifting shell (1), and a release mechanism (32) is arranged on the designated lifting mechanism (31). The designated lifting mechanism (31) comprises a supporting connecting plate (311) fixedly connected to the outer wall of the output end of the hydraulic cylinder (2): One end of the support connecting plate (311) away from the output end of the hydraulic cylinder (2) is fixedly connected to a platform (312); the outer wall of the support connecting plate (311) is fixedly connected to a sliding frame (313); the inner wall of the sliding frame (313) is fixedly connected to a first spring (314); one end of the first spring (314) away from the inner wall of the sliding frame (313) is fixedly connected to a sliding sleeve (315); the inner wall of the sliding sleeve (315) is fixedly connected to a second spring (316); one end of the second spring (316) away from the inner wall of the sliding sleeve (315) is fixedly connected to a designated plug rod (317); one end of the designated plug rod (317) away from the second spring (316) is provided with an inclined surface (318); and the inner wall of the lifting shell (1) is provided with a designated plug hole (319).

2. The device for automatically raising and lowering the aircraft sewage truck lifting platform to a designated height according to claim 1 is characterized in that: The release mechanism (32) comprises a limiting slide groove (321) provided at the top end of the supporting connecting plate (311); a slider (322) is slidably connected to the inner wall of the limiting slide groove (321); a top block (323) is fixedly connected to the top end of the slider (322); a release hole (324) is provided on the outer wall of the top block (323); a screw rod (325) is rotatably connected to the outer wall of one end of the top block (323) via a bearing; the outer wall of the screw rod (325) is threadedly connected to the outer wall of the platform (312); a connecting plate (326) is fixedly connected to the top end of the sliding sleeve (315); a connecting plate (326) is fixedly connected to the outer wall of the connecting plate (326); and a protrusion (328) is fixedly connected to the end of the connecting rod (327) away from the connecting plate (326).

3. The device for automatically raising and lowering the aircraft sewage truck lifting platform to a designated height according to claim 1 is characterized in that: The number of the designated insertion rods (317) is two, and the designated insertion rods (317) are distributed on the left and right sides of the supporting connecting plate (311) in a left-right symmetrical structure.

4. The device for automatically raising and lowering the aircraft sewage truck lifting platform to a designated height according to claim 1 is characterized in that: The designated plug holes (319) are multiple in number, and the inner wall of the designated plug hole (319) fits snugly with the outer wall of the designated plug rod (317).

5. The device for automatically raising and lowering the lifting platform of an aircraft sewage truck to a designated height according to claim 1 is characterized in that: The outer wall of the sliding sleeve (315) fits snugly with the inner wall of the sliding frame (313).

6. The device for automatically raising and lowering the aircraft sewage truck lifting platform to a designated height according to claim 2 is characterized in that: The end of the top block (323) away from the screw rod (325) is arranged in an arc shape, and the inner wall of the release hole (324) fits snugly with the outer wall of the connecting rod (327).

7. The device for automatically raising and lowering the lifting platform of an aircraft sewage truck to a designated height according to claim 2 is characterized in that: The number of the connecting rods (327) and the number of the releasing holes (324) are two respectively, and the connecting rods (327) and the releasing holes (324) are respectively distributed on the left and right sides of the top block (323) in a left-right symmetrical structure.

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