A height adjustment device for an aircraft dock

Abstract

This utility model relates to the field of aircraft docks, specifically a height adjustment device for aircraft docks. It includes an inner square tube assembly, an outer square tube assembly, and a reducer assembly. The reducer assembly includes a reducer, the output end of which is connected to a lead screw, and the reducer is connected to the upper platform of the dock via an upper connecting plate. The outer square tube assembly is connected to the reducer assembly. The inner square tube assembly includes casters, a trapezoidal nut, and an inner tube fitting. The lead screw is connected to the inner tube fitting via the trapezoidal nut, and the inner tube fitting contacts the ground via the casters. The outer square tube assembly includes an outer tube fitting, an outer ball bearing welding seat, and an outer ball bearing assembly. The outer ball bearing assembly is fixed to the outer tube fitting via the outer ball bearing welding seat, and the outer tube fitting is supported on the outer surface of the inner tube fitting by guide wheels. In this product, the raising or lowering of the lead screw drives the entire dock to rise or fall. Only four columns with casters are in contact with the ground, while other equipment and personnel can pass underneath, meeting on-site usage requirements.

Description

Technical Field

[0001] This utility model relates to the field of aircraft docks, specifically a height adjustment device for aircraft docks. Background Technology

[0002] Aircraft can be in flight or stationary states. When an aircraft is stationary, it needs to be parked somewhere, and a hangar is a place used to store aircraft.

[0003] While existing docks can accommodate aircraft, general-purpose wing docks need to be adapted to different aircraft types (with varying heights), and the space beneath the wing dock must be unobstructed to allow for the passage of other equipment and personnel. This necessitates adjusting the dock's height, and currently there is no height adjustment device that simultaneously meets all of these requirements. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a height adjustment device for an aircraft dock, which can solve the aforementioned problems. This utility model provides the following technical solution: A height adjustment device for an aircraft dock includes an inner square tube assembly, an outer square tube assembly, and a reducer assembly. The reducer assembly includes a reducer, the output end of which is connected to a lead screw, and the reducer is connected to an upper platform of the dock via an upper connecting plate. The outer square tube assembly is connected to the reducer assembly via a first fastener, a third fastener, and a fourth fastener. The inner square tube assembly includes casters, a trapezoidal nut, and an inner tube. The lead screw is connected to the inner tube via the trapezoidal nut, and the trapezoidal nut is fixed at the center of the inner tube. The inner tube is in contact with the ground via the casters. The outer square tube assembly includes an outer tube, an outer ball bearing seat, and an outer ball bearing assembly. The outer ball bearing assembly is fixed to the outer tube via the outer ball bearing seat, and the outer tube is supported on the outer surface of the inner tube by guide wheels. The outer ball bearing assembly can adjust the gap between the inner and outer tubes to achieve a guiding purpose. The working process of this product is as follows: The reducer drives the lead screw to move, which in turn drives the trapezoidal nut to move (converting helical motion into linear motion). Since the trapezoidal nut is fixed to the center of the inner tube, the inner tube moves up and down. Because the outer tube is fixed to the reducer assembly and supported on the outer surface of the inner tube by guide wheels, the outer tube acts as a guide, ensuring stable operation. The casters are fixed to the lower end of the inner tube and supported on the ground. Thus, the inner tube remains stationary while the outer tube moves up and down. Since the reducer is connected to the dock platform via an upper connecting plate, the rise or fall of the lead screw ultimately drives the entire dock to rise or fall. When used on a large wing dock, only four columns with casters are in contact with the ground, allowing other equipment and personnel to pass underneath, meeting on-site requirements.

[0005] As a further embodiment of this utility model: the reducer is fixed to the upper connecting plate by a support base.

[0006] As a further improvement of this invention, the lead screw is a trapezoidal lead screw, which can better match the trapezoidal nut.

[0007] As a further embodiment of this utility model: a limiting seat is installed at the lowest end of the lead screw, and the limiting seat is locked to the lead screw by means of a third internal hexagon screw, a fifth fastener and a sixth fastener.

[0008] As a further embodiment of this utility model: the inner tube is locked to the caster wheel by means of a second internal hexagonal screw, a second fastener, a seventh fastener and an eighth fastener.

[0009] As a further embodiment of this utility model: the outer ball assembly is fixed to the outer ball welding seat by a second round nut.

[0010] As a further embodiment of this utility model, the outer ball welding seat and the outer tube are fixed together by welding.

[0011] As a further embodiment of this utility model: the lead screw is fixed to the lower end of the support base by means of a first round nut, a flat key, a first internal hex screw, a thrust ball bearing and a locking washer.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This product uses the lifting and lowering of a lead screw as its power source, converting helical motion into linear motion. The inner tubing is fixed in place, while the outer tubing acts as a guide, allowing the entire dock to rise or fall as the lead screw moves. Only four columns with casters are in contact with the ground, while other equipment and personnel can pass underneath, meeting the requirements for on-site use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the height adjustment device for an aircraft dock in an embodiment of this utility model.

[0014] In the diagram: 1-First round nut; 2-Securing washer; 3-Reducer; 4-Support seat; 5-First fastener; 6-Outer pipe fitting; 7-Flat key; 8-First socket head cap screw; 9-Thrust ball bearing; 10-Universal wheel; 11-Trapezoidal nut; 12-Second socket head cap screw; 13-Lead screw; 14-Limit seat; 15-Third socket head cap screw; 16-Outer ball bearing seat; 17-Outer ball assembly; 18-Second round nut; 19-Inner pipe fitting; 20-Second fastener; 21-Upper connecting plate; 22-Third fastener; 23-Fourth fastener; 24-Fifth fastener; 25-Sixth fastener; 26-Seventh fastener; 27-Eighth fastener. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0017] Example 1, see Figure 1 A height adjustment device for an aircraft dock includes an inner square tube assembly, an outer square tube assembly, and a reducer assembly. The reducer assembly includes a reducer 3, the output end of which is connected to a lead screw 13, and the reducer 3 is connected to the upper platform of the dock via an upper connecting plate 21. The outer square tube assembly is connected to the reducer assembly via a first fastener 5, a third fastener 22, and a fourth fastener 23. The inner square tube assembly includes a caster wheel 10, a trapezoidal nut 11, and an inner tube 19. The lead screw 13 is connected to the inner tube 19 via the trapezoidal nut 11, and the trapezoidal nut 11 is fixed at the center of the inner tube 19. The inner tube 19 is in contact with the ground via the caster wheel 10. The outer square tube assembly includes an outer tube 6, an outer ball bearing welding seat 16, and an outer ball bearing assembly 17. The outer ball bearing assembly 17 is fixed to the outer tube 6 via the outer ball bearing welding seat 16. The outer tube 6 is supported on the outer surface of the inner tube 19 by guide wheels. The outer ball bearing assembly can adjust the gap between the inner tube 19 and the outer tube 6, thereby achieving the purpose of guidance. The working process of this product is as follows: the reducer 3 drives the lead screw 13 to move, and the lead screw 13 drives the trapezoidal nut 11 to move (converting helical motion into linear motion). Since the trapezoidal nut 11 is fixed at the center of the inner tube 19, the inner tube 19 moves up and down. Since the outer tube 6 is fixed on the reducer assembly and supported on the outer surface of the inner tube 19 by guide wheels, the outer tube 6 plays a guiding role, ensuring the stable operation of this product. The casters 10 are fixed to the lower end face of the inner tube 19 and supported on the ground. In this way, the inner tube 19 does not move, while the outer tube 6 moves up and down. Since the reducer 3 is connected to the platform on the dock through the upper connecting plate 21, the rise or fall of the lead screw 13 ultimately drives the rise or fall of the entire dock. When this product is used on a large wing dock, only four columns with casters 10 are in contact with the ground, while other equipment and personnel can pass underneath, meeting the requirements of on-site use.

[0018] In one embodiment of this utility model, the reducer 3 is fixed to the upper connecting plate 21 by the support base 4, so that the reducer 3 and the upper connecting plate 21 form a whole, thereby ensuring that the dock can be driven to rise and fall.

[0019] In one embodiment of this utility model, the lead screw 13 is a trapezoidal lead screw, which can better cooperate with the trapezoidal nut 11, resulting in smoother motion transmission and faster response speed.

[0020] In one embodiment of this utility model, a limiting seat 14 is installed at the lowest end of the lead screw 13. The limiting seat 14 is locked to the lead screw 13 by a combination of a third internal hexagon screw 15, a fifth fastener 24 and a sixth fastener 25. The limiting seat 14 can limit the lead screw 13, thereby ensuring that the lead screw 13 will not exceed its stroke and ensuring that the device can always operate normally.

[0021] In one embodiment of this utility model, the inner tube 19 is locked to the caster 10 by means of a second hexagonal screw 12, a second fastener 20, a seventh fastener 26 and an eighth fastener 27. This ensures that the caster 10 and the inner tube 19 will not move during the entire process, thereby realizing the raising and lowering of the dock.

[0022] In one embodiment of this utility model, the outer ball assembly 17 is fixed to the outer ball welding seat 16 by the second round nut 18, which provides a strong connection, and the parts are readily available and easy to replace.

[0023] In one embodiment of this utility model, the outer ball welding seat 16 and the outer tube 6 are fixed together by welding, which makes them difficult to separate and ensures the integrity of the device.

[0024] In one embodiment of this utility model, the lead screw 13 is fixed to the lower end of the support base 4 by means of a first round nut 1, a flat key 7, a first internal hex screw 8, a thrust ball bearing 9 and a stop washer 2.

[0025] In one embodiment of this utility model, the first fastener 5 and the second fastener 20 are both hexagonal head bolts, the third fastener 22, the fifth fastener 24 and the seventh fastener 26 are all flat washers, and the fourth fastener 23, the sixth fastener 25 and the eighth fastener 27 are all spring washers.

[0026] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "fixed," "set," etc., should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A height adjustment device for an aircraft dock, characterized in that, The system includes an inner square tube assembly, an outer square tube assembly, and a reducer assembly. The reducer assembly includes a reducer with a lead screw connected to its output end. The reducer is connected to the platform on the dock via an upper connecting plate. The outer square tube assembly is connected to the reducer assembly via a first fastener, a third fastener, and a fourth fastener. The inner square tube assembly includes casters, a trapezoidal nut, and an inner tube. The lead screw is connected to the inner tube via the trapezoidal nut, which is fixed at the center of the inner tube. The inner tube is in contact with the ground via the casters. The outer square tube assembly includes an outer tube, an outer ball bearing welding seat, and an outer ball bearing assembly. The outer ball bearing assembly is fixed to the outer tube via the outer ball bearing welding seat. The outer tube is supported on the outer surface of the inner tube by guide wheels.

2. The height adjustment device for an aircraft dock according to claim 1, characterized in that, The lead screw is a trapezoidal lead screw.

3. The height adjustment device for an aircraft dock according to claim 1 or 2, characterized in that, A limit seat is installed at the bottom of the lead screw. The limit seat is locked to the lead screw by the cooperation of the third internal hex screw, the fifth fastener and the sixth fastener.

4. The height adjustment device for an aircraft dock according to claim 1, characterized in that, The speed reducer is fixed to the upper connecting plate by a support base.

5. The height adjustment device for an aircraft dock according to claim 4, characterized in that, The lead screw is fixed to the lower end of the support base by means of a first round nut, a flat key, a first internal hex screw, a thrust ball bearing, and a locking washer.

6. The height adjustment device for an aircraft dock according to claim 1, characterized in that, The outer ball bearing welding seat and the outer tube are fixed together by welding.

7. The height adjustment device for an aircraft dock according to claim 1, characterized in that, The inner tube is locked to the caster wheel by means of a second hexagonal screw, a second fastener, a seventh fastener, and an eighth fastener.

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