Sliding type sandwich wear-resistant gasket structure

Abstract

The utility model provides a sliding type sandwich wear-resistant gasket structure, which belongs to the field of accessories of unmanned aerial vehicles and comprises a main wear-resistant cover, an auxiliary wear-resistant cover and a soft buffer layer which are coaxial and can rotate relatively, and the main wear-resistant cover and the auxiliary wear-resistant cover are respectively arranged on two sides of the soft buffer layer. The main wear-resistant cover, the auxiliary wear-resistant cover and the soft buffer layer are structurally limited to be coaxial and can rotate relatively, so that relative displacement of the main wear-resistant cover, the auxiliary wear-resistant cover and the soft buffer layer in the radial direction can be prevented, and the structural stability of the gasket is guaranteed; besides, the relative rotation of the main wear-resistant cover, the auxiliary wear-resistant cover and the soft buffer layer can buffer the rotational friction between the propeller and the mounting frame, and the rotational friction is transferred into the gasket structure, so that the wear can be reduced, and the replacement and maintenance cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of unmanned aerial vehicle accessories, especially relates to a sliding type sandwich wear -resisting gasket structure. BACKGROUND

[0002] Unmanned aircraft is called "unmanned aerial vehicle" simply, it is the aircraft of not carrying people that is controlled with radio remote control equipment and self - contained program control device. At present, unmanned aerial vehicle + industry application is the real need of unmanned aerial vehicle, and it is applied in the fields of aerial photography, agriculture, plant protection, miniature self - photography, express delivery, disaster rescue, observing wild animals, monitoring infectious diseases, surveying, news reporting, power patrol, disaster relief, film shooting, making romance, etc. It greatly expands the purpose of unmanned aerial vehicle itself.

[0003] The existing unmanned aerial vehicle mostly adopts the scheme that multiple propellers are arranged on the top of the fuselage to drive the unmanned aerial vehicle to take off. In the flight process, the propellers rotate at high speed and require to keep balance between multiple propellers, otherwise the flight stability of the unmanned aerial vehicle will be affected. The gasket structure between the propeller and the mounting frame is crucial to the balance of the high-speed rotating propeller.

[0004] The existing gasket is either completely made of hard wear -resisting material, and the hard contact lacks buffering capacity, which will affect the stability of high-speed rotation. Or it is made of multiple layer structure by adopting the way of hard-soft combination and adhesive fixing. But the adhesive fixing is an absolute fixed way, and the multiple layer structure of the gasket will not move relative to each other. The wear and tear between the gasket and the propeller or the mounting frame will affect the high-speed rotation of the propeller. In addition, the adhesive is easy to age and fall off. In the process of high-speed rotation, the falling off of the adhesive is easy to cause the relative displacement of the multiple layer structure in the radial direction, thereby affecting the dynamic balance under high speed, and causing the propeller to shake. SUMMARY

[0005] Based on the above problems existing in the prior art, the utility model provides a sliding type sandwich wear -resisting gasket structure, which comprises coaxial and relatively rotatable main wear -resisting cover, auxiliary wear -resisting cover and soft buffer layer.

[0006] Among them, the main wear -resisting cover or the auxiliary wear -resisting cover is provided with a shaft sleeve matched with the rotating shaft, and the soft buffer layer is rotatably sleeved outside the shaft sleeve.

[0007] Among them, the shaft sleeve is arranged at the center of the main wear -resisting cover, and the auxiliary wear -resisting cover is sleeved on the shaft sleeve and located on the other side of the soft buffer layer relative to the main wear -resisting cover.

[0008] Among them, the shaft sleeve is provided with an inverted hook clamped on the auxiliary wear -resisting cover, and the main wear -resisting cover is clamped and connected with the auxiliary wear -resisting cover through the inverted hook.

[0009] The vice wear-resistant cover is provided with a concave ring table matched with the reverse hook, and the concave distance of the concave ring table relative to the outer surface of the vice wear-resistant cover is equal to or greater than the thickness of the reverse hook.

[0010] The main wear-resistant cover is provided with a plurality of positioning protrusions on the circumferential side of the shaft sleeve, and the soft buffer layer is sleeved on the positioning protrusions.

[0011] The shaft sleeve is provided with a guide table on the other side relative to the main wear-resistant cover, the outer diameter of the guide table is smaller than the outer diameter of the shaft sleeve, and the guide table is farther away from the main wear-resistant cover relative to the reverse hook.

[0012] The main wear-resistant cover is provided with an unlocking hole at the corresponding position of the reverse hook, and the reverse hook can be deformed and separated from the vice wear-resistant cover by pushing through the unlocking hole.

[0013] The main wear-resistant cover and the vice wear-resistant cover are both provided with a circumferential side surrounding edge extending towards each other on the circumferential side of the side close to each other.

[0014] The main wear-resistant cover, the vice wear-resistant cover and the soft buffer layer are coaxially arranged and can rotate relative to each other, which can prevent the relative displacement of the main wear-resistant cover, the vice wear-resistant cover and the soft buffer layer in the radial direction, and ensure the stability of the gasket structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of a sliding sandwich wear-resistant gasket structure.

[0016] Figure 2 It is a three-dimensional structure schematic diagram of another angle of a sliding sandwich wear-resistant gasket structure.

[0017] Figure 3 It is a sectional structure schematic diagram of a sliding sandwich wear-resistant gasket structure.

[0018] Figure 4 It is a cooperation schematic diagram of the main wear-resistant cover and the soft buffer layer.

[0019] Figure 5 It is a three-dimensional structure schematic diagram of the main wear-resistant cover.

[0020] Figure 6 It is a three-dimensional structure schematic diagram of the vice wear-resistant cover.

[0021] Figure 7 It is a three-dimensional structure schematic diagram of another angle of the vice wear-resistant cover. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below in combination with the drawings and specific embodiments.

[0023] As shown in a kind of sliding sandwich wear pad structure shown in the drawing, Figures 1-7 Its main wear cover 1, circular auxiliary wear cover 2 and circular soft buffer layer 3, soft buffer layer 3 is made of high elasticity and low friction coefficient material, the both sides surface of soft buffer layer 3 is smooth, the main wear cover 1 is integrally formed with the matching shaft sleeve 4 at the center of circle, the length of shaft sleeve 4 can be customized and adjusted according to the distance between propeller and mounting frame, the main wear cover 1 is provided with three positioning protrusions 5 on the circumferential side of shaft sleeve 4, three positioning protrusions 5 are arranged in circle and the interval of adjacent two is 120 °, the soft buffer layer 3 is sleeved on the positioning protrusion 5 outside shaft sleeve 4, and soft buffer layer 3 and all positioning protrusions 5 are clearance fit, positioning protrusion 5 limits the relative displacement of soft buffer layer 3 in radial direction to some extent, the auxiliary wear cover 2 is sleeved on shaft sleeve 4 and located on the other side of soft buffer layer 3 relative to main wear cover 1, and the main wear cover 1, auxiliary wear cover 2 and soft buffer layer 3 are coaxial and can be relatively rotated by the cooperation of shaft sleeve 4 and positioning protrusion 5. Three reverse hooks 7 are arranged on the other side of shaft sleeve 4 relative to main wear cover 1 and clamped on the other side of auxiliary wear cover 2 relative to soft buffer layer 3, three reverse hooks 7 are evenly arranged in circle, the auxiliary wear cover 2 is provided with recessed ring table 8 matched with reverse hook 7 on the other side relative to soft buffer layer 3, reverse hook 7 can slide on recessed ring table 8, recessed ring table 8 is recessed towards soft buffer layer 3, and the recessed distance of recessed ring table 8 relative to the outer surface of auxiliary wear cover 2 is equal to the thickness of reverse hook 7, so that reverse hook 7 does not protrude to the outside of auxiliary wear cover 2, which affects the contact of pad structure and propeller, the main wear cover 1 is connected by clamping reverse hook 7 and recessed ring table 8 of auxiliary wear cover 2, and auxiliary wear cover 2 and soft buffer layer 3 are transitionally matched, the main wear cover 1 is provided with unlocking hole 10 at the corresponding position of reverse hook 7, reverse hook 7 can be bent and deformed towards the center of circle and separated from recessed ring table 8 of auxiliary wear cover 2 by passing through unlocking hole 10, so that auxiliary wear cover 2 can be removed, if mounting frame is provided with matching protrusion at the corresponding unlocking hole 10, unlocking hole 10 can also form positioning with protrusion, limit the rotation of main wear cover 1.

[0024] As a preferred embodiment, the main wear cover 1 and the auxiliary wear cover 2 are provided with a circumferential side wall 6 extending towards each other on one side of the circumferential side wall, and the shaft sleeve 4 is provided with a guide platform 9 on the other side relative to the main wear cover 1, the outer diameter of the guide platform 9 is smaller than the outer diameter of the shaft sleeve 4, and the guide platform 9 is farther away from the main wear cover 1 than the reverse hook 7. Since the diameter of the guide platform 9 is smaller, that is, the difference between the diameters of the guide platform 9 and the shaft hole of the auxiliary wear cover 2 is larger, the guide platform 9 is more easily inserted into the shaft hole of the auxiliary wear cover 2, and then the shaft sleeve 4 can be guided to pass through the shaft hole of the auxiliary wear cover 2.

[0025] The gasket structure provided by the embodiment is installed between the propeller and the mounting bracket of the unmanned aerial vehicle. During high-speed rotation of the propeller, the auxiliary wear cover 2 rotates with the propeller, so that the auxiliary wear cover 2 rotates relative to the soft buffer layer 3 and the main wear cover 1. The main wear cover 1, the auxiliary wear cover 2 and the soft buffer layer 3 bear the friction generated during high-speed rotation of the propeller, so as to reduce the wear of the propeller and the mounting bracket, and reduce the influence of friction on rotation of the propeller. In addition, the cost of replacing the gasket structure is lower, and the maintenance cost is reduced. In addition, the soft buffer layer 3 can improve the buffering capacity and adaptability of the gasket structure, so that the gasket structure can realize self-adjustment to a certain extent, ensure dynamic balance of the propeller at high speed, and improve the overall stability of the unmanned aerial vehicle. In addition, the soft buffer layer 3 is not easy to displace radially relative to the main wear cover 1 and the auxiliary wear cover 2 and protrude out of the range of the gasket structure, so as to further avoid affecting high-speed rotation of the propeller.

[0026] The above embodiment only expresses one embodiment of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A sliding sandwich wear pad structure characterized by, It includes coaxial and relatively rotatable main wear cover (1), vice wear cover (2) and soft buffer layer (3), main wear cover (1) and vice wear cover (2) are arranged on both sides of soft buffer layer (3) respectively.

2. A sliding sandwich wear pad structure according to claim 1, wherein The main wear cover (1) or vice wear cover (2) is provided with a shaft sleeve (4) matched with the rotating shaft, and the soft buffer layer (3) is rotatably sleeved on the shaft sleeve (4).

3. A sliding sandwich wear pad structure according to claim 2, wherein The shaft sleeve (4) is arranged at the center of the main wear cover (1), and the vice wear cover (2) is sleeved on the shaft sleeve (4) and located on the other side of the soft buffer layer (3) relative to the main wear cover (1).

4. A sliding sandwich wear pad structure according to claim 3, wherein The shaft sleeve (4) is provided with a reverse hook (7) clamped on the vice wear cover (2), and the main wear cover (1) is clamped and connected with the vice wear cover (2) through the reverse hook (7).

5. A sliding sandwich wear pad structure according to claim 4 wherein, The vice wear cover (2) is provided with a concave ring table (8) matched with the reverse hook (7), and the concave distance of the concave ring table (8) relative to the outer surface of the vice wear cover (2) is equal to or greater than the thickness of the reverse hook (7).

6. A sliding sandwich wear pad structure according to claim 3 wherein, The main wear cover (1) is provided with a plurality of positioning protrusions (5) on the side of the shaft sleeve (4), and the soft buffer layer (3) is sleeved on the positioning protrusions (5).

7. A sliding sandwich wear pad structure according to claim 4 wherein, The shaft sleeve (4) is provided with a guide table (9) on the other side relative to the main wear cover (1), the outer diameter of the guide table (9) is smaller than the outer diameter of the shaft sleeve (4), and the guide table (9) is farther away from the main wear cover (1) relative to the reverse hook (7).

8. A sliding sandwich wear pad structure according to claim 4 wherein, The main wear cover (1) is provided with an unlocking hole (10) at the corresponding position of the reverse hook (7), and the reverse hook (7) can be deformed and separated from the vice wear cover (2) by pushing through the unlocking hole (10).

9. A sliding sandwich wear pad structure according to any one of claims 1 to 8, wherein, The main wear cover (1) and the vice wear cover (2) are provided with a circumferential side edge (6) extending towards each other on one side of the circumferential side.

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