A special dismounting tool for flange ball valve gear box end cover

Abstract

The utility model relates to ball valve technical field discloses a kind of special dismounting tool of flange ball valve gear box end cover, including positioning disc, adjusting screw is threadedly connected in the inside center of positioning disc, multiple chutes are passed in the inside of positioning disc, pulley is provided in the chute, supporting rod is fixedly connected in the inside of pulley, the clamping plate is fixedly connected in the supporting rod bottom, fastening nut is threadedly connected in the supporting rod side wall, the chute is provided with at least three, and it is annular array arrangement with adjusting screw as center circle. In the utility model, the periphery of end cover is clamped by adjustable clamping plate to adapt to the size of different specifications of end cover, and precise positioning is realized by adjusting screw and positioning short shaft, the screw on end cover is disassembled while positioning short shaft is pressed on the center of end cover by rotating adjusting screw, so as to complete dismounting, and the operation is simple during dismounting process, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a special disassembly tool for the end cover of a flange ball valve gearbox. Background Technology

[0002] Flanged ball valve gearboxes are widely used in industrial pipeline systems in petroleum, chemical, power, and metallurgical industries. Their internal structure is typically complex, and the end caps may experience issues such as tightening, rusting, or adhesion during prolonged use. To ensure proper maintenance and repair, the gearbox end caps need to be disassembled periodically. Due to the tight connections of the end caps and limited installation space, disassembly requires significant manpower and tools with good precision and sufficient disassembly force.

[0003] Existing tools for disassembling end covers of flange ball valve gearboxes mostly employ threaded pulling or lever-operated designs. For example, they use a screw assembly with positioning holes for pulling, or a support frame and pry arm to apply external force to the end cover for separation. However, for flange ball valve gearboxes with unique structures, the end cover and the convex surface of the gearbox body are in a parallel fit. While traditional three-jaw pullers have automatic centering functions, when disassembling such irregularly shaped end covers, the tool's point of action is far from the end cover, making it difficult to ensure that the rotation axis of the end cover coincides with the rotation axis of the puller's spindle. This easily leads to uneven force distribution, preventing the end cover from moving simultaneously under force. This not only increases the difficulty of disassembly but also causes problems such as surface wear and seal failure. Therefore, a dedicated disassembly tool for flange ball valve gearbox end covers is proposed to solve these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a special disassembly tool for the end cover of a flange ball valve gearbox, which aims to improve the problem that it is inconvenient to disassemble end covers of different specifications in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A special disassembly tool for the end cover of a flange ball valve gearbox includes a positioning disc. An adjusting screw is threadedly connected to the center of the positioning disc. Multiple sliding grooves are opened through the inside of the positioning disc. A pulley is installed inside the sliding groove. A support rod is fixedly connected inside the pulley. A clamping plate is fixedly connected to the bottom of the support rod. A fastening nut is threadedly connected to the side wall of the support rod.

[0007] As a further description of the above technical solution:

[0008] The slide groove is provided in a minimum of three, and is arranged in a circular array with the adjusting screw as the center.

[0009] As a further description of the above technical solution:

[0010] The bottom end of the adjusting screw is fixedly connected to a short positioning shaft for abutting against the end cover of the flange ball valve gearbox.

[0011] As a further description of the above technical solution:

[0012] The fastening nut is in contact with the pulley in the tightened state, and the pulley is separated from the fastening nut in the free state.

[0013] As a further description of the above technical solution:

[0014] The contact side between the clamping plate and the end cover of the flange ball valve gearbox is triangular.

[0015] As a further description of the above technical solution:

[0016] A handle for twisting the positioning disc is fixedly connected to the side wall of the positioning disc.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, an adjustable clamp holds the periphery of the end cap to accommodate different sizes of end caps. Precise positioning is achieved by adjusting the lead screw and the positioning short shaft. By rotating the lead screw and pressing the positioning short shaft against the center of the end cap, the screws on the end cap are removed, thus completing the disassembly. The disassembly process is simple and convenient to use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a special disassembly tool for the end cover of a flange ball valve gearbox proposed in this utility model;

[0020] Figure 2 This is a side view of a special disassembly tool for the end cover of a flange ball valve gearbox proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the positioning disc of a special disassembly tool for the end cover of a flange ball valve gearbox proposed in this utility model.

[0022] Legend:

[0023] 1. Positioning disc; 2. Adjusting screw; 3. Positioning short shaft; 4. Slide groove; 5. Pulley; 6. Support rod; 7. Clamping plate; 8. Fastening nut; 9. Handle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-3 This utility model provides an embodiment of a special disassembly tool for a flange ball valve gearbox end cover, including a positioning disc 1, used to cover and position the gearbox end cover on its outer edge to provide a stable support base. An adjusting screw 2 is threadedly connected to the center of the positioning disc 1. The up-and-down rotation of the adjusting screw 2 can be used to adjust the height and downward pressure of the overall clamping mechanism, thereby achieving effective clamping of the end cover. Multiple sliding grooves 4 are formed through the interior of the positioning disc 1. Pulleys 5 are installed inside the sliding grooves 4 to facilitate adjustment of their position on the disc 1, thus adapting to different sizes of end covers. A support rod 6 is fixedly connected inside the pulley 5. A clamping plate 7 is fixedly connected to the bottom of the support rod 6. A fastening nut 8 is threadedly connected to the side wall of the support rod 6. At least three sliding grooves 4 are provided, arranged in a circular array around the adjusting screw 2. A short positioning shaft 3 is fixedly connected to the end of the flange ball valve gearbox, which abuts against the center positioning hole or protruding structure of the end cover. The fastening nut 8 is in contact with the pulley 5 in the tightened state, and the pulley 5 is separated from the fastening nut 8 in the free state. When the fastening nut 8 is tightened, it can press the pulley 5 to fix it in the slide groove 4, forming a reliable positioning. In the loosened state, the pulley 5 can slide freely in the slide groove, which is convenient for installation and adjustment. The clamping plate 7 is triangular in contact with the end cover of the flange ball valve gearbox, and can contact multiple points on the outer edge of the end cover at the same time, thereby forming a stable and balanced support and clamping effect. A handle 9 for turning the positioning disc 1 is fixedly connected to the side wall of the positioning disc 1, which is used by the operator to turn the positioning disc 1, thereby driving the entire tool to rotate or applying a torque, improving the efficiency of disassembly and assembly.

[0026] Working principle: When using this equipment to disassemble the end cover of the flange ball valve gearbox, place the positioning disc 1 on top of the end cover, then adjust the position of the pulley 5 so that the clamping plate 7 is clamped on the outer periphery of the end cover. Finally, twist the clamping plate 7 to make it abut against the pulley 5 to ensure the stability of the support rod 6. Finally, twist the adjusting screw 2 so that the clamping plate 7 is evenly stressed around the periphery of the end cover. When the positioning short shaft 3 abuts against the end cover, stop twisting the adjusting screw 2. At this time, remove the screws installed on the end cover. After all the screws are removed, the disassembly of the end cover is completed.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special dismounting tool for flanged ball valve gear box end cover, comprising a positioning disc (1), characterized in that: The positioning disc (1) has an adjusting screw (2) threadedly connected to its center. The positioning disc (1) has multiple sliding grooves (4) through it. The sliding grooves (4) have pulleys (5) inside them. The pulleys (5) have a support rod (6) fixedly connected inside them. The support rod (6) has a clamping plate (7) fixedly connected to its bottom. The support rod (6) has a fastening nut (8) threadedly connected to its side wall.

2. The flange ball valve gear box end cover special dismounting tool according to claim 1, characterized in that: The slide groove (4) is provided in at least three parts, and is arranged in a circular array with the adjusting screw (2) as the center.

3. The flange ball valve gear box end cover special dismounting tool according to claim 1, characterized in that: The bottom end of the adjusting screw (2) is fixedly connected to a positioning short shaft (3) for abutting against the end cover of the flange ball valve gearbox.

4. The flange ball valve gear box end cover special dismounting tool of claim 1, wherein: The fastening nut (8) is in contact with the pulley (5) in the fastened state, and the pulley (5) is separated from the fastening nut (8) in the free state.

5. The flange ball valve gear box end cover special dismounting tool of claim 1, wherein: The clamp (7) is triangular in shape with the side of the flange ball valve gearbox end cover that is in contact with it.

6. The flange ball valve gear box end cover special dismounting tool of claim 1, wherein: The positioning disc (1) has a handle (9) fixedly connected to its side wall for rotating the positioning disc (1).

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