Traction connection clamping jaw for small navigable aircraft

Abstract

The utility model discloses a small navigable aircraft traction connection clamping jaw, which relates to the technical field of aerospace, and comprises a clamping jaw arm and a clamping jaw main body, the clamping jaw main body comprises a clamping jaw head and a locking clamping jaw, the locking clamping jaw is rotatably connected on the clamping jaw head, and the clamping jaw head is rotatably connected with the clamping jaw arm; a positioning locking screw rod is arranged on the locking clamping jaw, a locking cavity is formed between the clamping jaw head and the locking clamping jaw, a limiting groove is formed in the clamping jaw head, and an inserting through hole is formed in the clamping jaw arm. Due to the adjustable design, the traction device is suitable for traction requirements of various small navigable aircrafts, and multiple purposes are achieved through one aircraft. The traction efficiency is remarkably improved, the structure is simple, small and flexible, operation in a narrow space is facilitated, and the maintenance progress and economical efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aerospace, specifically relates to a navigation small airplane traction connection dog. BACKGROUND

[0002] In the general aviation field, the traction operation of small airplanes is a key link in daily maintenance and operation, involving frequent airplane movement, parking and maintenance operation. The traditional traction method is that one aircraft maintenance personnel uses a special traction rod to clamp the traction point of the airplane front wheel, and achieves the purpose of shifting the airplane with the assistance of two or more people. The more advanced method abroad is to use an electric traction vehicle, which uses a special clamping device on the traction vehicle instead of the airplane random traction rod, and completes the airplane traction with the assistance of 1-3 people. This traction device usually uses fixed-size clamps or connecting pieces, which cannot be adapted to the traction rod diameters (standard range is between 20-50mm) of different models of airplanes, resulting in the need for operators to carry multiple sets of tools and frequent replacement (average replacement time is 5-10 minutes), which not only significantly reduces the traction efficiency (overall operation time is prolonged by more than 30%), but also increases equipment wear (clamp life is shortened by 40%) and labor intensity (operation fatigue is increased by 50%).

[0003] In the prior art, the traction dog is usually of rigid structure and lacks effective adjustment mechanism, which is prone to cause deformation or accidental falling of the traction rod (accident rate is as high as 0.5%) due to uneven force during traction, causing serious safety hazards (including equipment damage and personnel injury). In addition, such device is bulky (weight generally exceeds 10kg) and has poor portability, which is extremely inconvenient to operate in narrow hangars or complex ground conditions (such as uneven runway or crowded maintenance area), affecting maintenance progress (delay rate increases by 20%) and overall economy (maintenance cost increases by 15%). Therefore, there is an urgent need for a multifunctional and adjustable traction connection dog to improve the adaptability, safety and efficiency of the traction operation, while reducing operating costs. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art and provides a navigation small airplane traction connection dog.

[0005] The utility model aims at overcoming the defects of the prior art and provides a navigation small airplane traction connection dog.

[0006] A navigation small airplane traction connection dog, comprising a dog arm and a dog main body, the dog main body comprising a dog head and a locking dog, the locking dog being rotationally connected to the dog head, and the dog head being rotationally connected to the dog arm;A positioning locking screw is arranged on the locking dog, a locking chamber is formed between the dog head and the locking dog, a limiting groove is formed on the dog head, and a plug-through hole is formed on the dog arm.

[0007] The hinge connection is arranged between the claw head and the claw arm and between the locking claw and the claw head.

[0008] The claw head is C-shaped at one end and gradually decreases in size at the other end to form a stepped structure connected with the claw arm.

[0009] The locking claw comprises a locking support, the hinge connection is arranged between the locking support and the claw head, at least one adjusting block is movably arranged on the locking support to form a locking chamber with the claw head, the adjusting block is arc-shaped and concave, and a threaded through hole matched with the locking screw is formed on the locking support.

[0010] An adjusting nut is arranged on each adjusting block, the adjusting nut is used for adjusting the position of the adjusting block and fixing the adjusting block on the locking support.

[0011] The connection between the claw head, the locking claw and the claw arm is arc-shaped to facilitate rotation.

[0012] The utility model discloses the beneficial effects are:

[0013] The utility model discloses adjustable design is applicable to all kinds of small aircraft traction demand of navigation, realizes one machine multi -use. Assemble convenient, improve traction efficiency significantly, reduce tool replacement time 80%, overall operation speed -up 40%, reduce equipment wear and tear and personnel labor intensity, locking structure sets up and prevents the traction rod from falling off, enhances security;Simple structure, small and nimble and convenient in narrow space operation, promotes maintenance progress and economy. DRAWINGS

[0014] Fig. 1 It is the isometric view of the utility model;

[0015] Fig. 2 It is the utility model explosion map;

[0016] Fig. 3 It is the utility model use state diagram;

[0017] In the drawing, 1 is a claw arm, 2 is a claw head, 3 is a plug-in through hole, 4 is a limiting groove, 5 is an adjusting nut, 6 is an adjusting block, 7 is a locking screw, 8 is a locking support, 9 is a first hinge pin, 10 is a second hinge pin, 11 is a tractor, and 12 is a traction rod. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely in combination with embodiments, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] Refer to Figs. 1-3 The utility model provides a technical scheme:

[0020] A small airplane towing connection clamping jaw, including clamping jaw arm 1 and clamping jaw main body, clamping jaw main body includes clamping jaw head 2 and locking clamping jaw, locking clamping jaw includes locking support 8, the corresponding connecting through -hole is opened on clamping jaw arm 1 and clamping jaw head 2, and rotation is connected by first hinge pin 9, clamping jaw head 2 is hinged with clamping jaw arm 1 by first hinge pin 9 and can deflect up and down around hinge point (deflection angle can reach ± 15 degrees), the corresponding connecting through -hole is opened on clamping jaw head 2 and locking support 8, and rotation is connected by second hinge pin 10.

[0021] The one end of clamping jaw head 2 is C-shaped, the other end gradually reduces in size and is connected with clamping jaw arm 1 in a stepped structure, and a limiting groove 4 is formed in the middle of the C-shaped jaw of clamping jaw head 2. Two adjusting blocks 6 are movably arranged on the locking support 8, and each adjusting block 6 is arc-shaped relative to the surface of the clamping jaw head 2. The adjusting block 6 is fixed on the locking support 8 by the adjusting nut 5 arranged on the adjusting block 6. The adjusting nut 5 is operated to make the adjusting block 6 cooperate with the C-shaped part of the clamping jaw head 2 to form a locking chamber. Threaded holes are formed on the locking support 8, and the threaded holes are matched with locking screws 7 having threads matched with the threaded holes. The locking screws 7 are tightened, and the locking support 8 and the clamping jaw head 2 cannot rotate relative to each other.

[0022] Specifically, the clamping jaw arm 1 is a cuboid, the first end of the clamping jaw arm 1 is a plane, and a plug-in through hole 3 is formed in the plane for connecting a towing trailer; the other end is arc-shaped to facilitate the rotation of the clamping jaw arm 1 and the clamping jaw head 2 around the first hinge pin 9. In addition, the rotation connection parts on the clamping jaw head 2 and the locking support 8 are arc-shaped to facilitate rotation adjustment.

[0023] The hinge pin is preferably a cylindrical hinge pin with a ring clamping groove at both ends. The locking screw 7 and the adjusting nut 5 are both externally threaded and hand-tight cylindrical structures, which are convenient for manual operation.

[0024] When assembling, the clamping jaw arm 1 is first fixed to the towing vehicle 11 by a plug pin (to ensure stable connection), the clamping jaw head 2 is hinged to the clamping jaw arm 1 by the first hinge pin 9 (allowing up and down deflection), and the locking clamping jaw is hinged to the clamping jaw head 2 by the second hinge pin 10 (forming a movable joint). When in use, the airplane towing rod 12 is placed in the locking chamber formed by the adjusting block 6 cooperating with the C-shaped part of the clamping jaw head 2, the adjusting nut 5 is rotated to make the adjusting block 6 tightly fit the surface of the towing rod 12 (the adjustment process takes only 10-20 seconds), and then the locking screw 7 is tightened to fix the position. The clamping jaw head 2 can deflect up and down to adapt to uneven ground or the slope of the hangar.

[0025] The utility model discloses a test in hangar performance is excellent: adapt to a variety of traction rod 12 (diameter 25-45mm), and the traction efficiency is improved 40% (average operation time is reduced from 15 minutes to 9 minutes), and there is no falling accident, and the operation is simple (a person can complete), and the weight is only 4.5kg, and the portability is strong.

[0026] The above is only the preferred embodiment of the utility model, and it should be understood that the utility model is not limited to the form disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above teaching or related technical or knowledge. The modification and change made by the person in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims attached to the utility model.

Claims

1. A towing and connecting claw for a small general aviation aircraft, characterized in that: The device includes a claw arm and a claw body. The claw body includes a claw head and a locking claw. The locking claw is rotatably connected to the claw head, and the claw head is rotatably connected to the claw arm. The locking claw is provided with a positioning and locking screw. A locking chamber is formed between the claw head and the locking claw. A limit groove is opened on the claw head, and a insertion through hole is opened on the claw arm.

2. The traction connecting claw according to claim 1, characterized in that: The jaw head and jaw arm, as well as the locking jaw and jaw head, are all connected by hinges.

3. The traction connecting claw according to claim 1, characterized in that: One end of the claw head is C-shaped, and the other end gradually decreases in size, forming a stepped structure that connects to the claw arm.

4. The traction connecting claw according to claim 1, characterized in that: The locking claw includes a locking support, which is hinged to the claw head. At least one adjusting block is movably provided on the locking support to form a locking chamber with the claw head. The adjusting block has an arc-shaped concave surface. The locking support has a threaded through hole that matches the locking screw.

5. The traction connecting claw according to claim 4, characterized in that: Each of the adjusting blocks is provided with an adjusting nut, which is used to adjust the position of the adjusting block and fix it to the locking support.

6. The traction connecting claw according to claim 1, characterized in that: The connection between the jaw head, locking jaw, and jaw arm is arc-shaped to allow for rotation.

Images