A special ratchet spanner for opening and closing a pipeline gate valve

Abstract

The utility model discloses a kind of ratchet spanners special for pipeline gate valve switch, including spanner frame, rotatable hollow ratchet is installed in spanner frame, the middle part of hollow ratchet is equipped with through hole that can pass through gate valve wheel axle, the side of hollow ratchet is installed with multiple groups of circumferential array's columnar stop bar, columnar stop bar extends to the outside of spanner frame.The beneficial effects of the utility model are: by adopting bidirectional ratchet wheel rotation mode, the convenience and flexibility of gate valve are improved, the problem of inconvenient large-scale rotation under the environment of narrow space where gate valve is located is solved, the efficiency of gate valve and the applicability of the spanner are improved;Meanwhile, multiple groups of columnar stop bar structures are symmetrically arranged on one side of hollow ratchet, when applied, columnar stop bar is clamped into the hand hole corresponding to gate valve wheel disc, so that gate wheel disc is balanced in stress, and damage to gate valve is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ratchet wrench technology, and in particular to a ratchet wrench specifically for switching on and off pipeline gate valves. Background Technology

[0002] A ratchet wrench is a manual screw tightening and loosening tool, available in single-headed, double-headed, and multi-specification adjustable handle ratchet box wrenches (with fixed holes). It consists of main box sleeves of different sizes and secondary box sleeves connected by a hinge key. Because each box sleeve has two different sizes of box-shaped through holes, it can be used to tighten or loosen two sizes of screws, thus expanding its application range and saving on raw materials and labor costs. The adjustable handle allows for easy adjustment of the wrench's operating angle. This type of wrench is used for tightening and loosening screws and is characterized by its versatility, ease of use, and low cost.

[0003] Oil storage depots contain a large number of pipeline gate valves. Currently, the common practice is to manually rotate the gate valve disc one revolution at a time, slowly raising the valve stem to open or lowering it to close the gate. This manual method of opening and closing gate valves has the following drawbacks: First, the opening and closing speed is slow. Due to the limitation of the speed of manually rotating the gate valve disc, the speed of raising and lowering the axle is relatively slow. Second, manually rotating the gate valve disc is laborious, especially when opening and closing gate valves that are in a closed or open state for a long time. Because the exposed parts of the axle are covered with dust, oxidation, and rust over time, the opening and closing process is very heavy, sometimes requiring multiple people to use steel wires, pipe wrenches, steel pipes, or other extended rods to turn it. Third, it is easy to damage the valves, because neither pipe wrenches nor steel pipes are specialized equipment for opening and closing gate valves. Often, the gate valve disc breaks due to the uneven force applied to the valve by the extended rod. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing gate valves, such as slow opening and closing speed, laborious manual rotation of the gate valve wheel, and easy damage to the valve, and to provide a special ratchet wrench for opening and closing pipeline gate valves.

[0005] The purpose of this utility model is achieved through the following technical solution: a special ratchet wrench for switching a pipeline gate valve, including a wrench frame, a rotatable hollow ratchet installed inside the wrench frame, a through hole in the middle of the hollow ratchet that can pass through the gate valve wheel shaft, and multiple sets of columnar stop bars arranged in a circumferential array installed on one side of the hollow ratchet, the columnar stop bars extending to the outside of the wrench frame. The wrench frame is equipped with two sets of pawls corresponding to the hollow ratchet. One end of each set of pawls is equipped with a pawl that matches the pawl on the hollow ratchet. The other end of each set of pawls is rotatably connected to the wrench frame. A rotatable variable switch is installed in the middle of the two sets of pawls. The wrench frame is equipped with two sets of springs that are connected to the two sets of pawls respectively. The springs are connected to the side of the pawls away from the variable switch. A rotating rod is installed in the middle of the variable switch, which extends outside the wrench frame and is equipped with a toggle block.

[0006] By designing a through hole on the hollow ratchet that allows the gate valve wheel shaft to pass through, interference between the wrench and the gate valve wheel shaft is avoided during rotation. Simultaneously, multiple sets of circularly arrayed columnar stops on one side of the hollow ratchet pass through the gate valve wheel disc's orifice, achieving relative fixation of the gate valve wheel disc. This allows the gate valve wheel disc to rotate by rotating the hollow ratchet. The multiple sets of circularly arrayed columnar stops ensure balanced force on the gate valve wheel disc, preventing damage during rotation. The addition of a rotating wrench frame to drive the columnar stops and gate valve wheel disc increases the rotation efficiency of the gate valve wheel disc, effectively saving manpower. Furthermore, the use of a variable switch, a rotating rod, and a pawl to coordinate with the ratchet allows for limiting the rotation direction of the hollow ratchet, enabling continuous tightening or loosening of the gate valve wheel disc within a confined space and small angle. This convenient and efficient method allows for the rotation of the gate valve wheel disc with minimal effort.

[0007] A further technical solution is that the wrench frame has an installation groove, in which the hollow ratchet, pawl, and spring are all installed. A cover plate is installed on the wrench frame to seal the installation groove. The end of the spring away from the pawl is connected to the inner wall of the installation groove. By setting the spring, the pawl can be reset in time, ensuring smooth cooperation between the pawl and the changeover switch.

[0008] A further technical solution is to provide a threaded hole in the mounting slot, and to install the cover plate on the wrench frame by screws that are threaded to the threaded hole. The bottom surface of the actuating block is slidably connected to the cover plate. The cover plate is installed on the wrench frame by the threaded hole and screws to seal the mounting slot, thereby protecting the parts inside the mounting slot.

[0009] A further technical solution is that the bottom of the wrench frame and the cover plate are respectively provided with a first round hole and a second round hole. The first round hole is adapted to multiple sets of columnar stop rods, and the second round hole is adapted to the through hole. The first round hole is provided to meet the rotation requirements of the columnar stop rods, and the second round hole is provided to meet the passage of the gate valve wheel shaft.

[0010] A further technical solution is to install a handle on the wrench frame, which makes it easier for workers to grip and improves the convenience of operation.

[0011] A further technical solution is to provide an annular groove on the mounting slot, and install the hollow ratchet in the annular groove and slide it in connection with the annular groove. By setting the annular groove, the hollow ratchet can be made to rotate stably in the mounting slot, thereby effectively improving the stability and reliability of operation.

[0012] This utility model has the following advantages: By adopting a bidirectional ratchet rotation method, it improves the convenience and flexibility of opening and closing the gate valve, solving the problem of inconvenient large-scale rotation in narrow spaces where the gate valve is located, thus improving the efficiency of opening and closing the gate valve and the applicability of the wrench; at the same time, multiple sets of columnar stop structures are symmetrically arranged on one side of the hollow ratchet. When in use, the columnar stop structures are inserted into the corresponding hand holes of the gate valve disc, so that the gate valve disc is subjected to balanced force and avoids damage to the gate valve; a through hole is provided at the center of the hollow ratchet, which makes it easy for the wrench to be smoothly and firmly locked onto the gate valve disc; a variable switch is provided, which makes it convenient to open and close the gate valve in narrow and confined spaces with just one wrench; by providing a sleeve structure handle, when opening and closing heavy gate valves with severe corrosion, it is convenient to further increase the torque of the wrench by extending the sleeve extension rod, thus expanding the leverage effect of the wrench. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the wrench frame of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of the hollow ratchet of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention from another angle; Figure 5 This is a schematic diagram of the mounting groove structure inside the wrench frame of this utility model; In the diagram, 1. Wrench frame; 2. Hollow ratchet; 21. Through hole; 3. Columnar stop bar; 4. Pawl; 5. Spring; 6. Change switch; 7. Rotating rod; 8. Handle; 9. Threaded hole; 10. Mounting groove; 11. Annular groove; 12. First round hole; 13. Screw; 14. Cover plate; 15. Actuating block; 16. Second round hole. Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0015] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figures 1-5 As shown, it includes a wrench frame 1, a rotatable hollow ratchet 2 installed inside the wrench frame 1, a through hole 21 in the middle of the hollow ratchet 2 that can pass through the gate valve wheel shaft, and multiple sets of columnar stop bars 3 arranged in a circumferential array installed on one side of the hollow ratchet 2, the columnar stop bars 3 extending to the outside of the wrench frame 1. The wrench frame 1 is equipped with two sets of pawls 4 corresponding to the hollow ratchet 2. One end of each set of pawls 4 is provided with a pawl that matches the pawl on the hollow ratchet 2. The other end of each set of pawls 4 is rotatably connected to the wrench frame 1. A rotatable variable switch 6 is installed in the middle of each set of pawls 4. The wrench frame 1 is equipped with two sets of springs 5 ​​that are respectively connected to the two sets of pawls 4. The springs 5 ​​are connected to the side of the pawls 4 away from the variable switch 6. A rotating rod 7 is installed in the middle of the variable switch 6. The rotating rod 7 extends to the outside of the wrench frame 1 and is equipped with a toggle block 15.

[0020] By setting a through hole 21 on the hollow ratchet 2 to allow the gate valve wheel shaft to pass through, interference between the wrench and the gate valve wheel shaft is avoided during rotation. At the same time, multiple sets of columnar stop bars 3 arranged in a circular array on one side of the hollow ratchet 2 can pass through the gate valve wheel disc's aperture, completing the relative fixation of the gate valve wheel disc. This allows the gate valve wheel disc to be rotated by rotating the hollow ratchet 2. The multiple sets of columnar stop bars 3 arranged in a circular array ensure that the gate valve wheel disc is subjected to balanced force, preventing damage to the gate valve wheel disc during rotation. By setting a rotating wrench frame 1 to drive the columnar stop bars 3 and the gate valve wheel disc to rotate, the rotation efficiency of the gate valve wheel disc can be improved, effectively saving manpower. At the same time, by setting a variable switch 6, a rotating rod 7, and a pawl 4 to cooperate, the rotation direction of the hollow ratchet 2 can be limited, thereby enabling continuous tightening or loosening of the gate valve wheel disc within a confined space and a small angle. This makes the operation convenient and achieves efficient and labor-saving rotation of the gate valve wheel disc.

[0021] The wrench frame 1 has a mounting groove 10, in which the hollow ratchet 2, pawl 4 and spring 5 are all installed. The wrench frame 1 is equipped with a cover plate 14 for sealing the mounting groove 10. The end of the spring 5 away from the pawl 4 is connected to the inner wall of the mounting groove 10. By setting the spring 5, the pawl 4 can be reset in time, ensuring smooth cooperation between the pawl 4 and the change switch 6.

[0022] The mounting slot 10 is provided with a threaded hole 9. The cover plate 14 is installed on the wrench frame 1 by a screw 13 that is threaded to the threaded hole 9. The bottom surface of the actuating block 15 is slidably connected to the cover plate 14. The cover plate 14 is installed on the wrench frame 1 by the threaded hole 9 and the screw 13 to close the mounting slot 10, thereby protecting the parts in the mounting slot 10.

[0023] The bottom of the wrench frame 1 and the cover plate 14 are respectively provided with a first round hole 12 and a second round hole 16. The first round hole 12 is adapted to multiple sets of columnar stop bars 3, and the second round hole 16 is adapted to the through hole 21. The first round hole 12 is provided to meet the rotation requirements of the columnar stop bars 3, and the second round hole 16 is provided to meet the passage of the gate valve wheel shaft.

[0024] The wrench frame 1 is equipped with a handle 8 that can be fitted with an extension rod. The handle 8 is designed to make it easier for workers to hold and improve the convenience of operation. In addition, the handle 8 can be fitted with an extension rod to increase the torque of the ratchet wrench, improve the leverage effect of the wrench, and improve the ease of opening and closing severely corroded gates.

[0025] The mounting groove 10 is provided with an annular slide groove 11. The hollow ratchet 2 is installed in the annular slide groove 11 and is slidably connected to the annular slide groove 11. By setting the annular slide groove 11, the hollow ratchet 2 can be stably rotated in the mounting groove 10, thereby effectively improving the stability and reliability of operation.

[0026] When this invention is used to open a gate valve, the columnar stop 3 is passed through the orifice of the gate valve wheel. The variable switch 6 is rotated in the opening direction by the toggle block 15. One side of the variable switch 6 pushes the pawl 4 to press against the ratchet teeth on one side of the hollow ratchet 2. The lever 8 is rotated, and the lever 8 drives the hollow ratchet 2 to rotate. The columnar stop 3 on the hollow ratchet 2 drives the gate valve wheel to rotate in the opening direction. If there is space restriction, the lever 8 is rotated in the opposite direction after a certain angle. At this time, the pawl 4 has no locking effect on the ratchet teeth on the hollow ratchet 2. The ratchet teeth 4 pass over the ratchet teeth on the hollow ratchet 2. The hollow ratchet 2 does not move under the action of the columnar stop 3 and the gate valve wheel. The lever 8 is rotated continuously, and the above operation is repeated until the gate valve wheel shaft is completely raised to the top, thus opening the gate valve. When used to close the gate valve, the variable switch 6 is rotated in the closing direction by the toggle block 15, and the above operation is performed.

[0027] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A ratchet wrench specifically for switching on and off pipeline gate valves, characterized in that, Includes a wrench frame (1), in which a rotatable hollow ratchet (2) is installed. The hollow ratchet (2) has a through hole (21) in the middle that can pass through the gate valve wheel shaft. Multiple sets of columnar stops (3) arranged in a circular array are installed on one side of the hollow ratchet (2). The columnar stops (3) extend to the outside of the wrench frame (1). The wrench frame (1) is equipped with two sets of pawls (4) corresponding to the hollow ratchet (2). One end of each set of pawls (4) is provided with a pawl that matches the pawl on the hollow ratchet (2). The other end of each set of pawls (4) is rotatably connected to the wrench frame (1). A rotatable variable switch (6) is installed in the middle of each set of pawls (4). The wrench frame (1) is equipped with two sets of springs (5) that are respectively connected to the two sets of pawls (4). The springs (5) are connected to the side of the pawls (4) away from the variable switch (6). A rotating rod (7) is installed in the middle of the variable switch (6), and the rotating rod (7) extends to the outside of the wrench frame (1) and is equipped with a toggle block (15).

2. The ratchet wrench for switching a pipeline gate valve according to claim 1, characterized in that: The wrench frame (1) is provided with an installation groove (10), the hollow ratchet (2), the pawl (4) and the spring (5) are all installed in the installation groove (10), the wrench frame (1) is provided with a cover plate (14) for sealing the installation groove (10), and the end of the spring (5) away from the pawl (4) is connected to the inner wall of the installation groove (10).

3. A ratchet wrench for switching a pipeline gate valve according to claim 2, characterized in that: The mounting groove (10) is provided with a threaded hole (9), and the cover plate (14) is installed on the wrench frame (1) by a screw (13) that is threaded to the threaded hole (9). The bottom surface of the actuating block (15) is slidably connected to the cover plate (14).

4. A ratchet wrench for switching on and off a pipeline gate valve according to claim 3, characterized in that: The bottom of the wrench frame (1) and the cover plate (14) are respectively provided with a first round hole (12) and a second round hole (16). The first round hole (12) is adapted to multiple sets of columnar stop bars (3), and the second round hole (16) is adapted to the through hole (21).

5. A ratchet wrench for switching on and off a pipeline gate valve according to claim 1, characterized in that: The wrench frame (1) is equipped with a handle (8) that can be fitted with an extension rod.

6. A ratchet wrench for switching on and off a pipeline gate valve according to claim 2, characterized in that: The mounting groove (10) is provided with an annular slide groove (11), and the hollow ratchet (2) is installed in the annular slide groove (11) and slidably connected to the annular slide groove (11).

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