扳手的基本分類

Basic classification of wrenches

　　1．呆扳手：一端或兩端制有固定尺寸的開口，用以擰轉一定尺寸的螺母或螺栓。

1. Open end wrench: A fixed size opening made at one or both ends, used to turn a nut or bolt of a certain size.

　　2．梅花扳手：兩端具有帶六角孔或十二角孔的工作端，適用于工作空間狹小，不能使用普通扳手的場合。

2. Box wrench: With working ends with hexagonal or hexagonal holes at both ends, it is suitable for situations where the working space is narrow and ordinary wrenches cannot be used.

　　3．兩用扳手：一端與單頭呆扳手相同，另一端與梅花扳手相同，兩端擰轉相同規格的螺栓或螺母。

3. Dual use wrench: One end is the same as a single end solid wrench, and the other end is the same as a ring wrench. Tighten bolts or nuts of the same specification at both ends.

　　4．活扳手：開口寬度可在一定尺寸范圍內進行調節，能擰轉不同規格的螺栓或螺母。該扳手的結構特點是固定鉗口制成帶有細齒的平鉗凹；活動鉗口一端制成平鉗口；另一端制成帶有細齒的凹鉗口；向下按動蝸桿，活動鉗口可迅速取下，調換鉗口位置。

4. Monkey wrench: The width of the opening can be adjusted within a certain size range, and it can rotate bolts or nuts of different specifications. The structural feature of this wrench is that the fixed jaws are made into a flat concave pliers with fine teeth; One end of the movable jaw is made into a flat jaw; The other end is made into a concave jaw with fine teeth; Press down on the worm gear, and the movable jaws can be quickly removed to change the position of the jaws.

　　5．鉤形扳手：又稱月牙形扳手，用于擰轉厚度受限制的扁螺母等。

5. Hook wrench: also known as crescent wrench, used to turn flat nuts with limited thickness.

　　6．套筒扳手：一般稱為套筒:它是由多個帶六角孔或十二角孔的套筒并配有手柄、接桿等多種附件組成，特別適用于擰轉地位十分狹小或凹陷很深處的螺栓或螺母。套筒有公制和英制之分，套筒雖然內凹形狀一樣，但外徑、長短等是針對對應設備的形狀和尺寸設計的，沒有統一規定，所以套筒的設計相對來說比較靈活，符合大眾的需要。套筒扳手一般都附有一套各種規格的套筒頭以及擺手柄、接桿、萬向接頭、旋具接頭、彎頭手柄等用來套入六角螺帽。套筒扳手的套筒頭是一個凹六角形的圓筒；扳手通常由碳素結構鋼或合金結構鋼制成，扳手頭部具有規定的硬度，中間及手柄部分則具有彈性。

6. Socket wrench: commonly known as a socket: it is composed of multiple sockets with hexagonal or twelve corner holes and equipped with various accessories such as handles and extension rods. It is particularly suitable for turning bolts or nuts with very narrow positions or deep depressions. Sleeves are divided into metric and imperial systems. Although the concave shape of the sleeve is the same, the outer diameter, length, etc. are designed according to the shape and size of the corresponding equipment. There is no unified national regulation, so the design of the sleeve is relatively flexible and meets the needs of the public. Socket wrenches generally come with a set of socket heads of various specifications, as well as swing handles, extension rods, universal joints, screwdriver joints, elbow handles, etc., used to fit hexagonal nuts. The socket head of a socket wrench is a concave hexagonal cylinder; Wrenches are usually made of carbon structural steel or alloy structural steel, with the wrench head having a specified hardness and the middle and handle parts having elasticity.

　　7．內六角扳手：成L形的六角棒狀扳手，專用于擰轉內六角螺釘。內六角扳手的型號是按照六方的對邊尺寸來說的，螺栓的尺寸有標準。

7. Hexagonal wrench: A hexagonal rod shaped wrench in an L-shape, specifically designed for turning hex screws. The model of the internal hexagonal wrench is based on the size of the opposite side of the hexagon, and the size of the bolt has national standards.

　　用途：緊固或拆卸機床、車輛、機械設備上的圓螺母用。

Usage: Specially used for tightening or dismantling round nuts on machine tools, vehicles, and mechanical equipment.

　　8．扭力扳手：它在擰轉螺栓或螺母時，能顯示出所施加的扭矩；或者當施加的扭矩到達規定值后，會發出光或聲響信號。扭力扳手適用于對扭矩大小有明確地規定的裝配。

8. Torque wrench: It can display the applied torque when tightening bolts or nuts; Or when the applied torque reaches the specified value, a light or sound signal will be emitted. A torque wrench is suitable for assembly where the torque size is clearly specified.

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