Helicopter bottom wind drill vertical hole making auxiliary tool

Abstract

The utility model belongs to the technical field of machining, disclose a kind of helicopter bottom air drill vertical hole drilling auxiliary tool, comprising: support frame, it is tripod, upper end has a connector;Drilling mechanism, it is inserted on the connector, with guide rod, movement handle, air drill locking ring and connecting piece, air drill locking ring one end mobile sleeve connection on guide rod, the other end installs air drill, movement handle and connecting piece form connecting rod mechanism to push air drill locking ring to move up and down, complete drilling.The utility model solves the problem of insufficient physical labor in manual operation, the problem of affecting hole drilling efficiency that automatic equipment is inconvenient to use in small space, realizes time-saving and labor-saving, fast, stable, high quality of aircraft bottom vertical hole drilling, reduces security and quality risk.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to an auxiliary tool for vertical hole making by a wind drill at the bottom of a helicopter. Background Technology

[0002] Currently, helicopter drilling in China is mainly done manually or using automated equipment. Manual drilling requires a high level of physical strength from the operator and is mostly used in frontal positions. However, in confined spaces such as the bottom of an aircraft, the operator may need to adopt a supine or squatting posture, which is physically demanding, labor-intensive, and results in inconsistent drilling quality. Automated equipment, on the other hand, is mostly used in open spaces and is inconvenient to use in confined areas, thus having significant limitations.

[0003] In the aircraft sub-assembly and airframe structure formation process, a certain factory mostly uses large assembly jigs to assist in assembly. Many of these processes involve working at the bottom of the assembly jig, requiring operators to lie supine while wearing protective clothing and goggles. Sometimes, this involves drilling and riveting holes in three or more layers of parts, with each machine producing approximately 400-600 holes. Moreover, the parts may be made of hard materials such as aluminum, steel, and cast iron. Furthermore, the assembly jigs are mostly about 0.8-1 meter above the ground, and due to the limited space, many automated drilling machines cannot access the area. Therefore, manual labor is still currently the primary method of operation.

[0004] For the reasons mentioned above, operators are required to have good physical strength and endurance, as well as a high level of skill. Otherwise, if the operator is in an uncomfortable position or lacks physical strength, the drilling tool may slip or run, causing scratches, bumps, or collisions on the aircraft surface. Such troubleshooting is time-consuming and laborious, and it will also affect the user's satisfaction with the company and its products. Utility Model Content

[0005] This invention addresses the problems affecting drilling efficiency, such as insufficient physical strength in manual operations and the inconvenience of using automated equipment in confined spaces. It proposes an auxiliary tool for vertical drilling at the bottom of helicopters, enabling rapid and stable vertical drilling at the bottom of aircraft.

[0006] The technical solution of this utility model is implemented as follows: A vertical drilling auxiliary tool for the bottom of a helicopter, comprising: The support frame is a tripod with a connector at the top. The drilling mechanism, which is inserted into the connector, has a guide rod, a moving handle, a pneumatic drill locking ring, and a connecting piece. One end of the pneumatic drill locking ring is movably sleeved on the guide rod, and the other end is equipped with a pneumatic drill. The moving handle and the connecting piece form a linkage mechanism to push the pneumatic drill locking ring to move up and down to complete the drilling.

[0007] As a further technical solution of this utility model: the tripod includes a central main rod and three secondary rods. One end of the secondary rods is hinged to the central main rod, and the middle part is hinged to the central main rod through a connecting rod, so that it can be folded and unfolded.

[0008] As a further technical solution of this utility model: the locking ring of the pneumatic drill is provided with a locking screw for limiting the position of the pneumatic drill. As a further technical solution of this utility model: a stop is provided at the bottom of the guide rod, the lower end of the guide rod extends out of the stop and is inserted into the connector, and is limited by the locking screw.

[0009] As a further technical solution of this utility model: a fixed block is provided above the stop, the middle part of the moving handle is hinged to the fixed block, one end is hinged to one end of the connecting piece, and the other end of the connecting piece is hinged to the locking ring of the pneumatic drill.

[0010] As a further technical solution of this utility model: a spring is connected between the rock drill locking ring and the fixing block.

[0011] As a further technical solution of this utility model: a movable block is provided above the fixed block. One end of the movable block is movably sleeved on the guide rod, and the other end is supported and connected to the rock drill locking ring through a short shank, and moves together with it.

[0012] As a further technical solution of this utility model: a guide shaft is provided on the fixed block, the guide shaft passes through the through hole of the movable block, a spring is sleeved on the guide shaft, one end is connected to the fixed block, and the other end is connected to the rock drill locking ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model effectively solves the problem of high physical exertion for operators when drilling holes on the bottom of aircraft using pneumatic drills due to limited space and high hardness of parts. The operator must maintain a tilted-back posture throughout the operation, which is not only uncomfortable but also results in inconsistent hole quality. Compared to conventional operating postures, the same operation takes longer and carries greater safety risks.

[0014] 2. This invention enables time-saving, labor-saving, rapid, stable, high-quality, and safe drilling of the aircraft bottom from bottom to top. Calculations show that the drilling efficiency can be increased by approximately 76.9% through the application of this invention patent, and the drilling pass rate can reach approximately 100%.

[0015] 3. This utility model achieves force transmission during the hole-making process through the feed connector, continuously outputting stable force to keep the pneumatic drill moving. By pressing the handle downwards, the operator can replace the upward drilling action, allowing the operator to complete vertical hole-making from bottom to top while seated.

[0016] 4. This utility model utilizes a pneumatic drill locking device to ensure the stability of the tool during operation, making it less prone to slippage or runaway of the pneumatic drill bit, preventing hole diameter deviation, resulting in good hole-making effect, avoiding the quality risks caused by the operator relying on "feel" during hole-making, reducing the physical exertion of the operator due to inconvenient operating posture, eliminating unstable factors affecting hole-making quality, improving the safety of the operation process, meeting practical needs, and solving current problems.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings of the embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an auxiliary tool for vertical drilling of the bottom of a helicopter, according to the present invention.

[0019] The following are the labels in the attached diagram: Tripod 01, Stop 02, Movement Handle 03, Pneumatic Drill Locking Ring 04, Spring 05, Connector 06, Locking Screw 07. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some embodiments of this utility model, not all embodiments.

[0021] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The following is in conjunction with the appendix Figure 1 The embodiments of this utility model will be described in detail below.

[0024] Example 1 This utility model embodiment discloses an auxiliary tool for vertical hole drilling at the bottom of a helicopter, which includes: The support frame, which is a tripod 01, has a connector at the upper end; The drilling mechanism, which is inserted into the connector, has a guide rod, a motion handle 03, a pneumatic drill locking ring 04, and a connector 06. One end of the pneumatic drill locking ring 04 is movably sleeved on the guide rod, and the other end is equipped with a pneumatic drill. The motion handle 03 and the connector 06 form a linkage mechanism to push the pneumatic drill locking ring 04 to move up and down to complete the drilling.

[0025] Furthermore, the tripod 01 includes a central main rod and three auxiliary rods. One end of each auxiliary rod is hinged to the central main rod, and the middle rods are hinged to the central main rod via connecting rods, allowing it to be folded and stored.

[0026] Furthermore, the pneumatic drill locking ring 04 is provided with a locking screw 07 for limiting the pneumatic drill position. Furthermore, a stop 02 is provided at the bottom of the guide rod, the lower end of the guide rod extends out of the stop 02, is inserted into the connector, and is limited by the locking screw 07.

[0027] Furthermore, a fixed block is provided above the stop 02, the middle part of the moving handle 03 is hinged to the fixed block, one end is hinged to one end of the connecting piece 06, and the other end of the connecting piece 06 is hinged to the rock drill locking ring 04.

[0028] Furthermore, a spring 05 is connected between the pneumatic drill locking ring 04 and the fixing block.

[0029] Furthermore, a movable block is provided above the fixed block. One end of the movable block is movably sleeved on the guide rod, and the other end is connected to the rock drill locking ring 04 through a short shank, moving together with it.

[0030] Furthermore, a guide shaft is provided on the fixed block, the guide shaft passes through the through hole of the movable block, and the spring 05 is sleeved on the guide shaft, one end of which is connected to the fixed block and the other end of which is connected to the pneumatic drill locking ring 04.

[0031] This solution utilizes a tripod, feed connector 06, motion handle 03, pneumatic drill clamping device, and spring 05 to achieve bottom-up hole drilling with a pneumatic drill. The feed connector 06 transmits force during the drilling process, continuously outputting stable power to keep the pneumatic drill moving. The downward pressure of the motion handle 03 replaces the manual upward drilling action, allowing the operator to perform vertical hole drilling from bottom to top while seated. The pneumatic drill locking device ensures tool stability during operation, preventing drill bit slippage and deviation, thus avoiding hole diameter deviation and improving drilling quality. It also eliminates the quality risks associated with operator-reliant "feel" operation, reduces operator fatigue due to inconvenient operating posture, eliminates unstable factors affecting hole quality, improves operational safety, meets practical needs, and solves current problems.

[0032] This solution is stable and feasible, achieving rapid and stable vertical hole drilling on the aircraft bottom. The application of levers and supports effectively improves drilling efficiency and reduces safety and quality risks. It effectively compensates for the limitations of manual labor and the inconvenience of using automated equipment in confined spaces, thus achieving stable, rapid, and high-quality hole drilling in confined helicopter spaces. This solution has been applied in the fuselage assembly station of a certain model, and verified on 6 aircraft. The estimated efficiency improvement is approximately 76.9% (original estimated hole drilling time was 26 seconds / hole, now estimated hole drilling time is 6 seconds / hole), with 100% assembly quality qualified. Based on an annual production of 80 aircraft, the economic benefit is approximately 22,200 yuan [20 / 3600 * 448 (number of holes drilled) * 2 (persons) * 56 (hourly rate) * 80 (estimated annual production) = 22,300 yuan, research cost: 100 yuan].

[0033] Example 2 This utility model embodiment discloses an auxiliary tool for vertical drilling of the bottom of a helicopter using a wind drill, which includes: a tripod 01, a stop 02, a motion handle 03, a wind drill locking ring 04, a spring 05, a connector 06, and a locking screw 07.

[0034] Detailed operation process: Step 1: Loosen the locking screw 07 and open the pneumatic drill locking ring 04.

[0035] Step 2: Place the pneumatic drill and tighten the locking screw 07.

[0036] Step 3: Adjust the position of tripod 01 according to the drilling height to keep it balanced with the ground.

[0037] Step 4: Press down on the motion handle 03, and the connector 06 moves upward.

[0038] Step 5: The rock drill locking ring 04 drives the rock drill to move upward, roughly aligning it with the guide hole on the aircraft.

[0039] Step 6: Continue to adjust tripod 01 to accurately position the pneumatic drill.

[0040] Step 7: Continue pressing down on the motion handle 03 to drill a hole with the pneumatic drill.

[0041] Step 8: Lift the motion handle 03 upwards to separate the pneumatic drill from the aircraft.

[0042] Step 9: Move tripod 01 and repeat steps 4-8.

[0043] Step 10: Complete hole making and remove burrs from the hole edges.

[0044] Step 11: Use a steel ruler and feeler gauge to check the hole quality. This includes checking whether the hole size, hole accuracy, and hole surface quality meet the tolerances and technical requirements.

[0045] Example 3 A helicopter bottom-mounted air drill vertical hole-making auxiliary tool requires bottom-up hole drilling, the product itself has a guide hole or pre-drilled initial hole, and the tool must be placed on a flat surface. The specific usage method is as follows: 1) Place and level the tripod on the ground; 2) Secure the pneumatic drill and adjust it to the appropriate drilling height according to the aircraft's altitude; 3) Align the pneumatic drill with the product guide hole, connect the air belt, and operate the motion handle to stabilize the hole making.

[0046] Application Example 1: The process of docking and assembling the lower rear component of a certain model fuselage with the front component of the fuselage has been applied.

[0047] This method is used for drilling holes during the assembly process of the lower rear fuselage component and the front fuselage component of a certain model. The parts requiring drilling in this process are relatively hard, consisting of a titanium, aluminum, and composite sandwich structure. A single machine can drill 448 holes in a confined space. The application of this patented invention effectively improves drilling efficiency, saving approximately 2.49 hours of drilling time per machine, while ensuring drilling quality, improving operator posture, and significantly reducing operator workload. It enhances ergonomics and ensures the safety of both the product and personnel during the drilling process.

[0048] Application Example 2: In the final assembly of a certain model of fuselage, this application has been used in the docking process between the front fuselage and the middle fuselage, and in the docking process between the middle fuselage and the rear fuselage.

[0049] In the final assembly of a certain model of aircraft fuselage, the docking of the front fuselage with the middle fuselage and the docking of the middle fuselage with the rear fuselage both involve work at the bottom of the assembly jig. The parts requiring drilling are mostly machined or cast aluminum parts, with significant thickness and high hardness. Conventional horizontal drilling methods are physically demanding and time-consuming, with a single machine capable of drilling 1024 holes in a confined space. This invention patent saves approximately 5.68 hours of drilling time per machine, provides high-quality drilling, and allows one person to complete all drilling work in one go, saving manpower and shortening the production cycle.

[0050] Application Example 3: It has been applied in the docking process of the rear fuselage assembly of a certain model.

[0051] During the assembly and docking process of a certain model's rear fuselage, the majority of the work is done at the bottom of the assembly jig. The parts requiring drilling are mostly aluminum or composite materials, which are highly hard, generating a large amount of composite dust during the drilling process. Conventional supine drilling methods are physically demanding, time-consuming, and pose occupational health risks due to dust inhalation. A single machine can drill 872 holes in a confined operating space. This patented invention saves approximately 1.2 hours of drilling time per machine, provides high-quality drilling, and allows one person to complete all drilling work at once. It also eliminates the need for a supine position, reducing the inhalation of composite dust and preventing injury to the operator. Furthermore, it saves manpower and shortens the production cycle.

[0052] Thus, the objective of this utility model has been achieved.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vertical drilling auxiliary tool for helicopter bottom pneumatic drills, characterized in that, include: The support frame is a tripod with a connector at the top. The drilling mechanism, which is inserted into the connector, has a guide rod, a moving handle, a pneumatic drill locking ring, and a connecting piece. One end of the pneumatic drill locking ring is movably sleeved on the guide rod, and the other end is equipped with a pneumatic drill. The moving handle and the connecting piece form a linkage mechanism to push the pneumatic drill locking ring to move up and down to complete the drilling.

2. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 1, characterized in that, The tripod consists of a central main pole and three secondary poles. One end of each secondary pole is hinged to the central main pole, and the middle poles are hinged to the central main pole via connecting rods. It can be folded and stored.

3. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 1, characterized in that, The locking ring of the pneumatic drill is equipped with a locking screw for limiting the position of the pneumatic drill.

4. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 3, characterized in that, A stop is provided at the bottom of the guide rod, the lower end of the guide rod extends out of the stop, is inserted into the connector, and is limited by the locking screw.

5. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 4, characterized in that, A fixed block is provided above the stop, the middle part of the moving handle is hinged to the fixed block, one end is hinged to one end of the connecting piece, and the other end of the connecting piece is hinged to the locking ring of the pneumatic drill.

6. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 5, characterized in that, A spring connects the locking ring and the fixing block of the pneumatic drill.

7. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 6, characterized in that, A movable block is provided above the fixed block. One end of the movable block is movably sleeved on the guide rod, and the other end is connected to the rock drill locking ring through a short shank, moving together with it.

8. The helicopter bottom pneumatic drill vertical hole-making auxiliary tool according to claim 7, characterized in that, A guide shaft is provided on the fixed block. The guide shaft passes through the through hole of the movable block. A spring is sleeved on the guide shaft. One end is connected to the fixed block and the other end is connected to the pneumatic drill locking ring.

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