Replaceable blowing head for fan type test hand drill

Abstract

The utility model relates to the technical field of fan type test equipment, in particular to a replaceable air blowing head for a fan type test hand drill, which comprises an air duct, one end of the air duct is connected with a fixing ring, and the other end of the air duct is connected with an air gathering port. A rotating rod is coaxially arranged in the air duct, fan blades are arranged at one end of the rotating rod, and a clamping part is arranged at the other end of the rotating rod; the clamping part can be clamped by a clamping jaw of the hand drill, so that the fan blades are driven to rotate to form airflow, the air duct can be fixedly connected with the hand drill through the fixing ring, and the rotating fan blades are stabilized through the positioning ring and the positioning sliding groove structure; according to the hand drill, the blowing head is arranged, and the blowing function is integrated on the hand drill, so that the number of equipment carried by an operator in a fan type test is reduced, the risk of high-altitude operation by climbing a fan is reduced, the operation process is simplified, and the operation safety and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine type testing equipment, specifically a replaceable blower head for a hand drill used in wind turbine type testing. Background Technology

[0002] From prototype development to mass production, wind turbine generators must undergo type certification testing. This testing includes mechanical load testing, which requires grinding the inner walls of the turbine or blades using tools such as hand drills. After grinding, the debris must be cleaned. Traditionally, a blower is used to blow away the debris and wipe it clean. However, because wind turbines and blades are quite tall, grinding work usually requires climbing to high places for high-altitude operations. Carrying a lot of tools can severely affect the mobility of workers, increase their workload, and even affect the safety of the operation. Utility Model Content

[0003] The purpose of this invention is to provide a replaceable blower head for hand drills used in wind turbine type testing that can solve the problem of debris cleaning during mechanical load testing in wind turbine type testing, and reduce the number of tools carried by operators and reduce operational risks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A replaceable blower head for a hand drill used in fan type testing includes a blower duct, one end of which is connected to a fixing ring and the other end to a concentrator; a rotating rod is coaxially arranged inside the blower duct, one end of which is provided with a fan blade and the other end with a clamping part; multiple fixing protrusions are provided on the inner side of the fixing ring, and the concentrator is a trumpet-shaped structure with the smallest diameter at the outlet.

[0006] Preferably, an air inlet is provided on the side of the air duct, and the air inlet is located between the fan blade and the fixing ring.

[0007] Preferably, a positioning ring is connected to the outer side of the fan blade, and the outer side of the positioning ring is configured as a groove structure; a positioning groove that cooperates with the positioning ring is provided on the inner side of the air duct, and multiple rolling balls are provided in the positioning groove, which is sandwiched between the groove on the outer side of the positioning ring and the positioning groove.

[0008] Preferably, a connecting handle is provided on the outer side of the air duct.

[0009] Preferably, the rotating rod and the clamping part are connected by a connector plug-in connection.

[0010] Preferably, the fixing ring and fixing protrusion are both made of elastic material, while the air duct and air concentrator are both made of rigid material.

[0011] The beneficial effects of this utility model include:

[0012] This invention can be directly applied to existing hand drills by replacing the drill bit with a fan blade, thus transforming the hand drill into a handheld blower, replacing the blower used in traditional operations. This invention integrates the blowing function into the hand drill, thereby reducing the number of tools needed when climbing the blower and lowering the risk of accidents during the climb.

[0013] This utility model uses elastic material to make the fixing ring and fixing protrusion of the air duct, which can be easily adapted to various models and sizes of hand drills on the market for installation and use. There is no need to prepare or modify the matching hand drill, which saves application and usage costs and facilitates widespread promotion.

[0014] This invention incorporates a structure similar to a deep groove ball bearing between the fan casing and the fan blades to support and position the fan blades, preventing vibration and swaying during high-speed rotation. By using rolling balls, the friction between the positioning ring of the fan blades and the positioning groove of the fan casing is transformed into rolling friction, thereby significantly reducing the friction between the two and effectively improving the working efficiency and service life of the fan blades.

[0015] This utility model features a connecting handle on the outside of the ventilation duct, allowing the blower head to be easily hung on the operator's body, making it more convenient to carry and not hindering the operator from climbing the blower. The detachable fan blade rotating rod and connecting part allow for easy replacement and installation; the connecting part can be installed first, and then the rotating rod and ventilation duct can be installed together onto the front of the hand drill. This simple and quick installation and replacement process simplifies the operation and improves the convenience of construction work. The airflow quickly and promptly removes debris and dust generated on the working surface after drilling, maintaining a clean working environment and preventing sensor errors caused by debris, thus contributing to the stability and accuracy of monitoring data during blower type testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the internal structure of the present invention when it is installed on a hand drill.

[0019] In the diagram: 1. Fixing ring; 11. Fixing protrusion; 2. Air duct; 21. Connecting handle; 22. Air inlet; 23. Air concentrator; 24. Positioning groove; 25. Rolling ball; 3. Rotating rod; 31. Fan blade; 32. Positioning ring; 4. Hand drill; 41. Clamping plate fixing end; 42. Clamping claw. Detailed Implementation

[0020] The following is a further explanation of the present invention in conjunction with specific embodiments, such as... Figure 1 As shown, this embodiment is a replaceable blower head for a hand drill used in fan type testing. It includes a cylindrical air duct 2, with a horn-shaped air inlet 23 at one end and a retaining ring 1 at the other end.

[0021] The fixing ring 1 is made of elastic material, and multiple fixing protrusions 11 are evenly arranged on its inner side. The fixing protrusions 11 can cooperate with the chuck fixing end 41 on the hand drill 4 to fix the air duct 2 to the hand drill. The fixing ring 1 is made of elastic material, so it can be adapted to hand drill chucks of various sizes. For hand drill chucks that lack anti-slip structure, friction can also be used for fixing.

[0022] The air concentrator 23 is a uniformly flared structure with the smallest diameter at the outlet end. Its function is to increase the air velocity inside the air duct 2, thereby increasing the wind force at the outlet; for example... Figure 2 As shown, a rotating rod 3 is provided on the inner side of the air duct 2, and a fan blade 31 is provided at one end of the rotating rod 3; when the rotating rod 3 rotates, it will drive the fan blade 31 to rotate, thereby generating airflow and forming a wind blowing outward.

[0023] A positioning ring 32 is connected to the outer edge of the fan blade 31. The positioning ring 32 is used to stabilize the position of the fan blade 31 and prevent the fan blade from vibrating or swaying, thereby minimizing the danger of working at height. On the inner side of the air duct 2, a positioning groove 24 is provided to cooperate with the positioning ring 32. The positioning groove 24 is a circular groove with an inward opening. Multiple rolling balls 25 are evenly distributed inside the positioning groove 24. The outer side of the positioning ring 32 has an arc-shaped groove structure, which can cooperate with the rolling balls 25 to clamp the rolling balls 25 between the positioning groove 24 and the positioning ring 32. Through the rolling balls 25, the friction between the positioning ring 32 and the positioning groove 24 can be converted into sliding friction, thereby greatly reducing the friction between the two and increasing the working performance and service life of the fan blade 31.

[0024] A ring of air inlets 22 is evenly arranged on the side of the air duct 2. The air inlets 22 are located between the fan blade 31 and the fixing ring 1. Air can enter the air duct 2 from the outside through the air inlets 2 to replenish the air blown out of the air duct 2. A connecting handle 21 is provided on the outer side of the air duct 2. The blower head can be hung on the operator's body by hooks, ropes, etc. through the connecting handle 21, thereby improving its portability.

[0025] In this embodiment, one end of the rotating rod 3 is connected to a clamping part, which is a prism structure with a regular polygonal cross-section. The clamping part and the rotating rod 3 are detachably connected. A pair of mating star-shaped connector structures are provided at the end where the clamping part connects to the rotating rod 3, so that they can transmit rotation and rotate synchronously after being inserted and connected.

[0026] like Figure 3 As shown, in actual use, when cleaning the working surface after drilling, the drill bit installed on the hand drill 4 is first removed. Then, the clamping part of the rotating rod 3 is removed and installed on the chuck 42 of the hand drill 4. After the clamping part is installed, the remaining rotating rod 3 and the air duct 2 are fitted together on the front end of the hand drill 4, so that the rotating rod 3 and the clamping part are inserted and matched. At this time, the fixing ring 1 is fitted on the chuck fixing end 41 of the hand drill 4. The fixing protrusion 11 on its inner side matches the anti-slip groove structure provided on the chuck fixing end 41, and the air duct 2 and the hand drill 4 are fixedly connected together under the action of the fixing ring 1 in the elastic contraction state. Then, the hand drill 4 is started normally, so that its chuck 42 drives the rotating rod 3 to rotate, which in turn drives the fan blade 31 to rotate to generate airflow, which is finally discharged from the outlet of the air concentrator 23 to blow and clean the debris on the working surface.

[0027] The above description is merely a further explanation of the present utility model in conjunction with specific embodiments. All descriptions made do not imply any limitation on the protection scope of the present utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope of the claims.

Claims

1. A replaceable blower head for a hand drill used in fan type testing, comprising a blower duct, characterized in that: One end of the air duct is connected to a fixing ring, and the other end is connected to an air concentrator. A rotating rod is coaxially arranged inside the air duct. One end of the rotating rod is provided with a fan blade, and the other end is provided with a clamping part. Multiple fixing protrusions are provided on the inner side of the fixing ring. The air concentrator is a trumpet-shaped structure with the smallest diameter at the outlet.

2. The replaceable blower head for a hand drill used in type testing of blowers according to claim 1, characterized in that: An air inlet is provided on the side of the air duct, and the air inlet is located between the fan blade and the fixing ring.

3. The replaceable blower head for a hand drill used in type testing of blowers according to claim 2, characterized in that: A positioning ring is connected to the outer side of the fan blade, and the outer surface of the positioning ring is configured as a groove structure; a positioning groove that cooperates with the positioning ring is provided on the inner surface of the air duct, and a plurality of rolling balls are provided in the positioning groove, the rolling balls being sandwiched between the groove on the outer surface of the positioning ring and the positioning groove.

4. The replaceable blower head for a hand drill used in type testing of blowers according to claim 1, characterized in that: A connecting handle is provided on the outer side of the air duct.

5. The replaceable blower head for a hand drill used in type testing of blowers according to claim 1, characterized in that: The rotating rod and the clamping part are connected by a connector plug-in connection.

6. The replaceable blower head for a hand drill used in type testing of blowers according to claim 1, characterized in that: Both the fixing ring and the fixing protrusion are made of elastic material, while the air duct and the air concentrator are made of rigid material.

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