Small and medium-sized valve operating tool

Abstract

The utility model relates to a small and medium-sized valve operation tool which is a wrench and comprises a wrench handle and a wrench head. The wrench head is a multi-jaw chuck and is connected with the wrench handle through a ratchet wheel structure. The distance between claws of the multi-claw chuck can be adjusted according to the size of the valve, and the multi-claw chuck can be matched with valves of different sizes. And due to the design of the ratchet wheel structure, the tool does not need to be taken down and clamped repeatedly during use, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power plant, concretely relates to a small and medium-sized valve operating tool. BACKGROUND

[0002] The pipe diameter of each pipeline in the power plant is inconsistent, the size of the required valve changes accordingly, and the size of the supporting valve flange plate is also different. In addition, the fixing method of the flange plate is divided into two types. The first type is that the flange plate rises and falls with the valve rod during rotation. The second type is that only the valve rod rises and falls during rotation.

[0003] The F wrench is a common valve operating tool in the power plant. It has the advantages of simplicity, durability, low price and easy manufacturing. However, it also has obvious disadvantages. First, the distance between the two clamping teeth is fixed, and only valves of corresponding sizes can be operated. Therefore, multiple F wrenches of different sizes need to be carried when the large system is restored. Second, during operation of the F wrench, it needs to be removed and clamped again after rotating a certain angle, and then the flange plate is rotated again. This process is repeated until the valve is fully opened or closed, which is laborious and time-consuming. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a small and medium-sized valve operating tool, which can operate valves of different sizes and is convenient to operate.

[0005] A small and medium-sized valve operating tool, which is a ratchet wrench, is composed of a ratchet wrench body and a driving head. The driving head is a multi-jaw chuck connected to the ratchet wrench body through a quick release structure.

[0006] Further improvement of the above technical solution, the ratchet wrench is a perforated type, provided with a through hole, the through hole penetrates the multi-jaw chuck and the ratchet wrench body connected by the quick release structure, the through hole is located at the middle position of each jaw of the multi-jaw chuck; the through hole can accommodate the practical valve rod moving up and down in the second flange fixing method in the above background technology.

[0007] Further refinement of the above technical solution, each jaw of the multi-jaw chuck is a long jaw, provided with a thread inside; to ensure sufficient gripping force.

[0008] Further refinement of the above technical solution, the quick release structure includes an inner gear ring and a connecting column, the inner wall of the ratchet of the ratchet wrench body is uniformly distributed with a plurality of teeth, forming the inner gear ring, the connecting column is fixedly connected to the multi-jaw chuck and coaxial with the multi-jaw chuck, the connecting column penetrates the inner gear ring and is embedded with the inner gear ring.

[0009] Further refining the above technical solution, the quick-release structure includes an internal gear ring and a connecting post. The ratchet inner wall of the ratchet wrench body is evenly provided with several teeth to form the internal gear ring. The connecting post is fixedly connected to the multi-jaw chuck and is coaxial with the multi-jaw chuck. The connecting post passes through the internal gear ring and is engaged with the internal gear ring.

[0010] The connecting column is hollow, and together with the hole provided on the multi-jaw chuck, it forms the through hole.

[0011] Further refining the above technical solution, the multi-jaw chuck has a variable diameter disc for adjusting the distance between its jaws, and a columnar protrusion is provided at the center of the variable diameter disc. The columnar protrusion is placed in an opening groove provided on the connecting column and is clearance-fitted with it.

[0012] Several connecting rods are evenly distributed around the connecting column and the multi-jaw chuck, and are used to fix and connect the connecting column and the multi-jaw chuck.

[0013] To further refine the above technical solution, the columnar protrusion has a T-shaped cross-section, and the opening groove provided on the connecting column is T-shaped.

[0014] The advantages of this utility are that it has a reasonable design and simple structure. The distance between the claws of the multi-jaw chuck can be adjusted according to the size of the valve, so it can match valves of different sizes. The ratchet structure design makes it convenient to operate without having to repeatedly remove or jam the tool. Attached Figure Description

[0015] Fig. 1 This is a front view of small and medium-sized valve operating tools.

[0016] Fig. 2 This is a top view of small and medium-sized valve operating tools.

[0017] The diagram shows the ratchet wrench body 1, ratchet 1-1, multi-jaw chuck 2, gripper 2-1, reducing plate 2-2, quick-release structure 3, internal gear ring 3-1, connecting post 3-2, through hole 4, columnar protrusion 5, opening groove 6, and connecting rod 7. Detailed Implementation

[0018] like Figs. 1-2 As shown, a small to medium-sized valve operating tool is a ratchet wrench, which consists of a ratchet wrench body 1 and a multi-jaw chuck 2. The multi-jaw chuck 2 and the ratchet wrench body 1 are connected by a quick-release structure 3. The ratchet wrench is a through-hole type, which has a through hole 4. The through hole 4 passes through the multi-jaw chuck 2 and the ratchet wrench body connected by the quick-release structure 3. The through hole 4 is located in the middle of each claw 2-1 of the multi-jaw chuck.

[0019] Each jaw 2-1 of the multi-jaw chuck is a long jaw with internal threads;

[0020] The quick release structure 3 comprises an inner ring gear 3-1 and a connecting column 3-2. The inner wall of the ratchet handle main body is uniformly provided with a plurality of teeth, which constitutes the inner ring gear 3-1. The connecting column 3-2 is fixedly connected to the multi-jaw chuck 2 and coaxial with the multi-jaw chuck 2. The connecting column 3-2 passes through the inner ring gear 3-1 and is embedded with the inner ring gear 3-1. The connecting column 3-2 is hollow, and the connecting column 3-2 and the hole provided on the multi-jaw chuck 2 constitute a through hole 4.

[0021] The multi-jaw chuck 2 has a variable diameter disc 2-2 for adjusting the distance between the claws 2-1. The variable diameter disc 2-2 is provided with a cylindrical protrusion 5 at the center position. The cylindrical protrusion 5 is placed in the opening groove 6 provided on the connecting column 3-2 and cooperates with the gap. A plurality of connecting rods 7 are uniformly distributed on the outer periphery of the connecting column 3-2 and the multi-jaw chuck 2, and are fixedly connected to the connecting column 3-2 and the multi-jaw chuck 2. The cross section of the cylindrical protrusion 5 is T-shaped, and the opening groove 6 provided on the connecting column is T-shaped.

[0022] When the above-mentioned small and medium-sized valve operating tool is used, the variable diameter disc of the multi-jaw chuck is rotated to adjust the distance between the claws of the multi-jaw chuck, so that it is matched with the flange plate of the valve. The claws of the multi-jaw chuck are clamped on the flange plate of the valve, the ratchet handle main body is rotated, and the flange plate of the valve is rotated clockwise or counterclockwise, so that the valve is opened or closed.

[0023] The above-mentioned embodiments are only for illustrating the practical technical concept and characteristics, the purpose is to enable persons skilled in the art to understand the content of the utility model and to implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A small to medium-sized valve operating tool, wherein the tool is a ratchet wrench, the ratchet wrench comprising a ratchet wrench body and a drive head; characterized in that, The drive head is a multi-jaw chuck, which is connected to the ratchet wrench body via a quick-release structure; The ratchet wrench is a through-hole type, which has a through hole that passes through the multi-jaw chuck and the ratchet wrench body connected by a quick-release structure. The through hole is located in the middle of each jaw of the multi-jaw chuck. The quick-release structure includes an internal gear ring and a connecting post. The ratchet body of the ratchet wrench has several teeth evenly distributed on its inner wall to form the internal gear ring. The connecting post is fixedly connected to the multi-jaw chuck and is coaxial with the multi-jaw chuck. The connecting post passes through the internal gear ring and is engaged with the internal gear ring. The connecting post is hollow and forms the through hole with the hole provided on the multi-jaw chuck.

2. The small and medium-sized valve operating tool according to claim 1, characterized in that, Each claw of the multi-jaw chuck is a long claw with internal threads.

3. The small and medium-sized valve operating tool according to claim 1, characterized in that, The multi-jaw chuck has a variable diameter disc for adjusting the distance between its jaws. A columnar protrusion is provided at the center of the variable diameter disc. The columnar protrusion is placed in an opening groove provided on the connecting column and is clearance-fitted with it. Several connecting rods are evenly distributed around the connecting column and the multi-jaw chuck, and are used to fix and connect the connecting column and the multi-jaw chuck.

4. A small to medium-sized valve operating tool according to claim 3, characterized in that, The columnar protrusion has a T-shaped cross-section, and the opening groove provided on the connecting column is T-shaped.

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