A labor-saving tool for easy valve operation

Abstract

This utility model discloses a labor-saving tool for easy valve operation, belonging to the field of wrench tool technology. It includes a base, pawls, a ratchet assembly, a rotating cylinder, and a telescopic handle. The base has three sets of pawls arranged circumferentially, which can slide radially along the base and be locked. A rotating cylinder is rotatably mounted on the base, connected to the base via the ratchet assembly. The telescopic handle is mounted on the rotating cylinder. This utility model utilizes the lever principle and a common ratchet mechanism, primarily addressing the problems of high force requirements, inconvenient operation, and low efficiency in traditional valve operating tools. It is particularly suitable for valve operation scenarios requiring high torque. This tool has advantages such as simple structure, convenient operation, low cost, and wide applicability, effectively reducing the labor intensity of operators and improving work efficiency, thus having broad application prospects.

Description

Technical Field

[0001] This utility model relates to a labor-saving tool that facilitates valve operation and belongs to the field of wrench tool technology. Background Technology

[0002] Valves are widely used in industrial production and daily life, especially in the petroleum, chemical, power, and water sectors. Valve opening and closing operations are crucial, and valve wrenches are common tools used in these industries for manually operating valves. Currently, common valve opening and closing wrenches include: 1. Manual wrenches: Require manual force from the operator and are suitable for valves with low torque. However, for valves with high torque, operation is laborious and inefficient. 2. Electric wrenches: Powered by an electric motor, they are labor-saving and efficient, but the equipment is large, expensive, and cannot be used in environments without power. 3. Hydraulic wrenches: Utilize a hydraulic system for power and are suitable for valves with high torque. However, the equipment is complex, expensive, and difficult to maintain.

[0003] In actual production sites, some equipment valves are located in very narrow spaces, making it very inconvenient to use common valve wrenches. Due to limited operating space, when opening and closing valves, only a small angle can be turned each time, requiring tool adjustments, which is time-consuming, labor-intensive, and inefficient. Moreover, many valves require a large torque to complete the opening and closing operation due to design reasons or installation location limitations, which brings great difficulties to operators and increases their labor intensity. In addition, the fixed size of the three-jaw chuck cannot adapt to valves of different sizes, which is very limiting and not flexible or convenient to use.

[0004] In existing technologies, some methods overcome the problems of narrow valve positions or the need for large torque by incorporating telescopic handle structures and ratchet mechanisms. Others design adjustable three-jaw chucks to accommodate valves of different sizes. However, these methods are typically complex and relatively fixed, making them inconvenient for disassembly, maintenance, and use, especially in field operations or hazardous environments. Operators require a portable, labor-saving, and easy-to-operate tool to perform valve opening and closing tasks. Therefore, there is an urgent need for a new type of valve operating tool that can easily open and close high-torque valves through simple operation without relying on an external power source, while also being portable and highly efficient. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a labor-saving tool that facilitates valve operation.

[0006] The technical solution adopted by this utility model is as follows: a labor-saving tool for easy valve operation is designed, which includes a chassis, pawls, a ratchet assembly, a rotating drum, and a telescopic handle. The chassis has three sets of pawls arranged in a circumferential row. The pawls grip the valve to be tightened or loosened. The pawls can slide and lock radially along the chassis to accommodate valves of different specifications. The rotating drum is rotatably mounted on the chassis. The rotating drum is connected to the chassis by the ratchet assembly, which facilitates valve tightening or loosening operations. The telescopic handle is mounted on the rotating drum, and its length can be adjusted according to the usage environment and valve conditions.

[0007] Furthermore, the chassis has three T-shaped sliding grooves on its underside. One end of the claw has a locking slot for engaging the valve, and the other end has a T-shaped sliding head. The claw connects to the T-shaped sliding groove through the T-shaped sliding head to form a reliable sliding connection. The three T-shaped sliding grooves intersect at the center of the chassis, allowing the claw to be assembled and disassembled at the intersection point. The edges of the triangular groove formed by the intersection are rounded to further facilitate the assembly and disassembly of the claw. This sliding groove structure allows for adjustment of the claw position and the locking slot direction.

[0008] Furthermore, the claw is equipped with a locking head, which fixes the claw's position in the T-shaped groove to prevent it from sliding during operation, thus facilitating operation. The T-shaped sliding end of the claw has a cylindrical groove, and the locking head has a guide post inserted into the cylindrical groove. The guide post can slide along the cylindrical groove, and a locking spring is provided between the guide post and the cylindrical groove. The two ends of the locking spring are connected to the guide post and the cylindrical groove, respectively. Compression of the locking spring moves the claw. When it needs to be fixed, pressing the claw moves it to the desired position, releasing the claw, and the locking spring pushes out the locking head, thus fixing the claw on the T-shaped groove.

[0009] Furthermore, a sleeve is provided on the upper side of the chassis, and the rotating cylinder is disposed inside the sleeve. A ratchet shaft is provided on the chassis inside the sleeve, and an upper ratchet wheel and a lower ratchet wheel are provided on the ratchet shaft. Corresponding upper and lower pawls are provided on the inner wall of the rotating cylinder. The depth to which the rotating cylinder is inserted into the sleeve is adjustable so that the upper ratchet wheel and the upper pawl engage or the lower ratchet wheel and the lower pawl engage. When the upper ratchet wheel and the upper pawl engage, the rotating cylinder can only drive the chassis to rotate counterclockwise. When the lower ratchet wheel and the lower pawl engage, the rotating cylinder can only drive the chassis to rotate clockwise, forming a ratchet structure for easy operation.

[0010] Furthermore, the upper and lower pawls are respectively hinged to the inner wall of the rotating cylinder via spring shafts to form a spring hinge structure.

[0011] Furthermore, the sleeve is provided with a socket, and the outside of the rotating cylinder is provided with multiple annular limiting grooves. A pin is inserted into the socket and extends into the annular limiting groove. The pin limits the rotation of the rotating cylinder to prevent it from shifting and ensures stable engagement between the ratchet and the pawl. A sliding roller is provided at one end of the pin inserted into the limiting groove to ensure that the rotation of the rotating cylinder is not obstructed.

[0012] Furthermore, the sleeve is provided with an ear plate, a locking rod is slidably provided on the ear plate, and the pin is provided with a hole for receiving the locking rod. The pin is fixed by the locking rod to prevent it from sliding out and to keep it always in a limiting position relative to the rotating cylinder.

[0013] Furthermore, a plug is provided at the lower end of the locking rod, a return spring is provided on the locking rod located between the ear plate and the plug, and a handle is provided on the locking rod located on the upper side of the ear plate to facilitate locking the pin.

[0014] Furthermore, the telescopic handle includes a fixed rod and a sleeve. One end of the fixed rod is fixedly connected to the rotating drum, and the other end is inserted into the sleeve. Anti-detachment posts are respectively provided on opposite sides of the fixed rod. The sleeve is provided with an adjusting groove for accommodating the anti-detachment posts, which can adjust the length of the telescopic handle on the one hand, and prevent the two from separating on the other hand.

[0015] Furthermore, the chassis is provided with an arc-shaped weight-reducing hole that runs through the chassis, which reduces the overall weight of the tool and reduces the burden on the operator. The arc-shaped weight-reducing hole is alternately arranged with the chuck, making it easy to observe when the chuck engages the valve and enabling it to engage quickly.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention features a pawl that slides radially along the chassis and locks, making it suitable for valves of different sizes. The rotating drum is connected to the chassis via a ratchet assembly. This ratchet mechanism provides unidirectional transmission, effectively preventing reverse torque from impacting the tool and operator. The telescopic handle is designed with an adjustable length, allowing operators to adjust the grip length according to the installation position of different valves. The overall structure of this invention is relatively simple and can be disassembled, facilitating disassembly, maintenance, and use. It offers advantages such as portability, labor-saving, high efficiency, and ease of operation, especially in field operations or hazardous environments.

[0018] This utility model is applicable to scenarios requiring the opening and closing of high-torque valves in industries such as petroleum, chemical, power, and water, and is particularly suitable for valve operation in fieldwork or hazardous environments. Operators can easily perform the opening and closing of high-torque valves, improving work efficiency and reducing labor intensity. This tool has advantages such as simple structure, convenient operation, low cost, and wide applicability, effectively reducing the labor intensity of operators and improving work efficiency, and has broad application prospects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 For the isometric projection of this utility model Figure 1 Schematic diagram.

[0021] Figure 2 This is a schematic diagram showing the present invention after it is engaged with the valve.

[0022] Figure 3 For the isometric projection of this utility model Figure 2 Schematic diagram.

[0023] Figure 4 This is a schematic cross-sectional view of the present invention.

[0024] Figure 5 for Figure 4 Enlarged view of part A.

[0025] Figure 6 This is a schematic diagram showing the concealed rotating cylinder and other components of this utility model.

[0026] Figure 7 This is a schematic diagram showing the concealed chassis and other components of this utility model.

[0027] Figure 8 This is a schematic diagram of the pin of this utility model.

[0028] Figure 9 This is a schematic diagram of the locking rod of this utility model.

[0029] Figure 10 This is a schematic diagram of the ratchet pawl of this utility model being installed via a spring shaft.

[0030] In the diagram: 1. Chassis; 2. Claw; 3. Rotary drum; 4. Telescopic handle; 5. T-shaped slide; 6. Bayonet; 7. T-shaped slide head; 8. Locking head; 9. Columnar groove; 10. Guide post; 11. Locking spring; 12. Sleeve; 13. Ratchet shaft; 14. Upper ratchet; 15. Lower ratchet; 16. Upper pawl; 17. Lower pawl; 18. Spring shaft; 19. Annular limit groove; 20. Pin; 21. Auxiliary roller; 22. Ear plate; 23. Locking rod; 24. Return spring; 25. Handle; 26. Fixing rod; 27. Sleeve; 28. Anti-detachment post; 29. ​​Adjusting slide; 30. Weight removal hole; 31. Slot; 32. Connecting post; 33. Hinge spring. Detailed Implementation

[0031] 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, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0033] Example 1

[0034] like Figure 1-4 As shown, a labor-saving tool for easy valve operation includes a base 1, jaws 2, a ratchet assembly, a rotating cylinder 3, and a telescopic handle 4. The base 1 (disc structure) has three sets of jaws 2 arranged circumferentially. The jaws 2 can slide radially along the base 1 and lock, and can be quickly detached from the base 1. The rotating cylinder 3 is rotatably mounted on the base 1 (i.e., the rotating cylinder 3 can rotate after installation). The rotating cylinder 3 is also detachably mounted. The rotating cylinder 3 is connected to the base 1 via the ratchet assembly. The telescopic handle 4 is mounted on the rotating cylinder 3. In use, the jaws 2 are engaged with the valve to be opened or closed. The telescopic handle 4 is adjusted to a suitable length, the handle is gripped and rotated, causing the rotating cylinder 3 to rotate. The rotating cylinder 3 then rotates the base 1, thereby applying a tightening or loosening force to the valve to open or close it.

[0035] In this embodiment, one specific structural arrangement for the claw 2 to slide radially along the chassis 1 is as follows: three T-shaped grooves 5 are provided on the lower side of the chassis 1; one end of the claw 2 is provided with a C-shaped latch 6, and the other end is provided with a T-shaped slider 7; the claw 2 is connected to the T-shaped groove 5 through the T-shaped slider 7; the three T-shaped grooves 5 intersect at the center of the chassis 1, and none of their outer ends penetrate the outer edge of the chassis 1; the corners of the triangular groove formed by the intersection of the three T-shaped grooves 5 are rounded or partially cut off to facilitate disassembly, assembly, and adjustment of the claw 2. Based on the above structure, one specific structural arrangement for the claw 2 to be locked onto the chassis 1 is as follows: a locking head 8 is provided on the claw 2, such as... Figure 5 As shown, the T-shaped sliding head 7 of the chuck 2 is provided with a cylindrical groove 9, and the locking head 8 is provided with a guide post 10. The guide post 10 is inserted into the cylindrical groove 9, and a locking spring 11 is provided between the guide post 10 and the cylindrical groove 9. The two ends of the locking spring 11 are respectively connected to the guide post 10 and the cylindrical groove 9. The locking structure of the chuck 2 can also be other methods, such as using screws for tightening or clamping (conventional existing technology).

[0036] Example 2

[0037] This embodiment, based on Embodiment 1, provides a specific structural arrangement for connecting the rotating cylinder 3 and the chassis 1 via a ratchet assembly. In this embodiment, a sleeve 12 is fixedly mounted on the upper side of the chassis 1, and the rotating cylinder 3 is disposed within the sleeve 12, forming a rotatable connection between the two. A ratchet shaft 13 is fixedly mounted on the chassis 1 within the sleeve 12, and an upper ratchet 14 and a lower ratchet 15 are mounted on the ratchet shaft 13. Corresponding upper pawls 16 and lower pawls 17 are mounted on the inner wall of the rotating cylinder 3, as shown below. Figure 6-7 As shown. The depth to which the rotating cylinder 3 is inserted into the sleeve 12 is adjustable, so that the upper ratchet 14 and the upper pawl 16 engage or the lower ratchet 15 and the lower pawl 17 engage. When the upper ratchet 14 and the upper pawl 16 engage, the rotating cylinder 3 can only drive the chassis 1 to rotate counterclockwise. When the lower ratchet 15 and the lower pawl 17 engage, the rotating cylinder 3 can only drive the chassis 1 to rotate clockwise.

[0038] More specifically, the upper ratchet 14 and lower ratchet 15 are provided with ratchet teeth with opposite directions, and the upper pawl 16 and lower pawl 17 are arranged in opposite directions. The upper pawl 16 and lower pawl 17 are respectively hinged to the inner wall of the rotating cylinder 3 by spring shaft 18 to form a spring hinge structure. Specifically, it can be as follows: Figure 10As shown, a slot 31 is provided on the inner wall of the rotating cylinder 3, and a connecting post 32 is provided on one side of the pawl. The two ends of the connecting post 32 are rotatably connected to the two ends of the slot 31 respectively. After the pawl is hinged, it can rotate at a certain angle along the connection point. However, after rotating at a certain angle, it will be limited by the slot 31 on the side away from the inner wall of the rotating cylinder 3. A hinge spring 33 is provided on the connecting post 32. The two ends of the hinge spring 33 extend and fit against the inner wall of the sleeve 12 and the surface of the pawl respectively. After the pawl is pressed against the inner wall of the rotating cylinder 3 and the pressure is released, it is reset by the hinge spring 33. When the upper ratchet 14 and the upper pawl 16 are engaged, rotating the drum 3 counterclockwise causes the upper ratchet 14 and the upper pawl 16 to press against each other, driving the base 1 to rotate. Rotating the drum 3 clockwise causes the upper pawl 16 to be pressed against the inner wall of the drum 3 by the teeth of the upper ratchet 14, and the drum 3 rotates freely. (At this time, it should be noted that since the drum 3 generally tends to disengage the pawl 2 from the valve when it is rotating freely, a certain vertical force can be applied to the drum 3 while applying rotational force to make it press against the valve and prevent it from loosening its engagement with the valve. Alternatively, the base 1 or the sleeve 12 can be held.) When the lower ratchet 15 and the lower pawl 17 are engaged, the working principle is the opposite of the above process.

[0039] In this embodiment, one specific structure for the rotatable connection between the rotating cylinder 3 and the sleeve 12 is as follows: the sleeve 12 is provided with a socket, the rotating cylinder 3 is provided with an annular limiting groove 19, and a pin 20 is inserted into the socket. Figure 8 As shown, the pin 20 extends into the annular limiting groove 19, and a sliding roller 21 is provided at one end of the pin 20 inserted into the limiting groove. The pin 20 limits the rotation of the cylinder 3. To make the depth of the cylinder 3 inserted into the sleeve 12 adjustable, at least two annular limiting grooves 19 can be provided on the outer wall of the cylinder 3. The pin 20 is inserted into different annular limiting grooves 19 to correspond to different ratchet and pawl engagements. Pins 20 can be provided on opposite sides of the sleeve 12 (only one side is shown in the figure) to enhance the limiting support strength of the pins 20.

[0040] Since the pin 20 is at risk of slipping out during use, although it can be interference-fitted with the socket on the sleeve 12, this is inconvenient. Alternatively, the sleeve 12 can be provided with an ear plate 22, and a locking rod 23 can be slidably mounted on the ear plate 22. Figure 9 As shown, the pin 20 is provided with a socket for accommodating the locking rod 23. The locking rod 23 is inserted into the socket to limit the pin 20. More specifically, the lower end of the locking rod 23 is provided with a plug with an outer diameter larger than the rod body. A return spring 24 is provided on the locking rod 23 located between the ear plate 22 and the plug. The return spring 24 keeps the locking rod 23 inserted into the socket. A handle 25 is provided on the locking rod 23 located on the upper side of the ear plate 22 for easy lifting of the locking rod 23.

[0041] It should be noted that there are many existing technologies that disclose the installation of ratchet mechanisms on the wrench for opening and closing valves. Any ratchet structure disclosed in the prior art other than the ratchet assembly structure provided in this embodiment can also be used.

[0042] Example 3

[0043] This embodiment is a further optimization of the tool structure based on embodiment 2.

[0044] The labor-saving tool described in this embodiment has a telescopic handle 4 comprising a fixed rod 26 and a sleeve 27. One end of the fixed rod 26 is fixedly connected to the rotating drum 3, and the other end is inserted into the sleeve 27. Anti-detachment posts 28 are respectively provided on opposite sides of the fixed rod 26. The sleeve 27 is provided with an adjusting groove 29 for accommodating the anti-detachment posts 28. This allows the sleeve 27 to be pulled out or retracted from the fixed rod 26 to adjust the overall length of the handle, while also preventing the two from detaching. In this embodiment, the chassis 1 has an arc-shaped weight-relief hole 30 penetrating the chassis 1, and the arc-shaped weight-relief hole 30 is alternately arranged with the claw 2.

[0045] When using this application, after assembling it, adjust and lock the position of the pawl 2 according to the valve to be opened or closed, bite the pawl 2 onto the valve, and then adjust the telescopic handle 4 to a suitable length to operate the valve to loosen or tighten it; when the valve needs to be operated in reverse after the previous operation is completed, adjust the depth position of the rotating cylinder 3 in the sleeve 12 to adjust the direction of the ratchet mechanism, adjust the biting direction of the pawl 2, and then perform the reverse operation.

[0046] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple", "multiple roots", and "multiple groups" mean two or more, and the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are only 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.

[0047] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A labor-saving tool for easy valve operation, characterized in that: The device includes a chassis (1), pawls (2), a ratchet assembly, a rotating cylinder (3), and a telescopic handle (4). The chassis (1) is provided with three sets of pawls (2) arranged in a circumferential row. The pawls (2) can slide and lock along the chassis (1) radially. The rotating cylinder (3) is rotatably provided on the chassis (1). The rotating cylinder (3) is connected to the chassis (1) through the ratchet assembly. The telescopic handle (4) is provided on the rotating cylinder (3).

2. The labor-saving tool for facilitating valve operation according to claim 1, characterized in that: The chassis (1) has three T-shaped grooves (5) on its lower side. One end of the claw (2) is provided with a jaw (6) and the other end is provided with a T-shaped slider (7). The claw (2) is connected to the T-shaped groove (5) through the T-shaped slider (7). The three T-shaped grooves (5) intersect at the center of the chassis (1), and the edges of the triangular groove formed by the intersection are rounded.

3. The labor-saving tool for facilitating valve operation according to claim 2, characterized in that: The claw (2) is provided with a locking head (8), and the T-shaped slide (7) end of the claw (2) is provided with a cylindrical groove (9). The locking head (8) is provided with a guide post (10), the guide post (10) is inserted into the cylindrical groove (9), and a locking spring (11) is provided between the guide post (10) and the cylindrical groove (9). The two ends of the locking spring (11) are respectively connected to the guide post (10) and the cylindrical groove (9).

4. The labor-saving tool for facilitating valve operation according to any one of claims 1-3, characterized in that: A sleeve (12) is provided on the upper side of the chassis (1), and a rotating cylinder (3) is provided inside the sleeve (12). A ratchet shaft (13) is provided on the chassis (1) inside the sleeve (12). An upper ratchet wheel (14) and a lower ratchet wheel (15) are provided on the ratchet shaft (13). An upper pawl (16) and a lower pawl (17) are provided on the inner wall of the rotating cylinder (3). The depth of the rotating cylinder (3) inserted into the sleeve (12) is adjustable so that the upper ratchet wheel (14) and the upper pawl (16) mesh or the lower ratchet wheel (15) and the lower pawl (17) mesh. When the upper ratchet wheel (14) and the upper pawl (16) mesh, the rotating cylinder (3) can only drive the chassis (1) to rotate counterclockwise. When the lower ratchet wheel (15) and the lower pawl (17) mesh, the rotating cylinder (3) can only drive the chassis (1) to rotate clockwise.

5. The labor-saving tool for facilitating valve operation according to claim 4, characterized in that: The upper pawl (16) and lower pawl (17) are respectively hinged to the inner wall of the rotating cylinder (3) via spring shaft (18) to form a spring hinge structure.

6. The labor-saving tool for facilitating valve operation according to claim 5, characterized in that: The sleeve (12) is provided with an insertion port, and the outside of the rotating cylinder (3) is provided with multiple annular limiting grooves (19). A pin (20) is inserted into the insertion port, and the pin (20) extends into the annular limiting groove (19). A sliding roller (21) is provided at one end of the pin (20) inserted into the limiting groove.

7. The labor-saving tool for facilitating valve operation according to claim 6, characterized in that: The sleeve (12) is provided with an ear plate (22), and a locking rod (23) is slidably provided on the ear plate (22). The pin (20) is provided with a hole for receiving the locking rod (23).

8. The labor-saving tool for facilitating valve operation according to claim 7, characterized in that: A plug is provided at the lower end of the locking rod (23), a return spring (24) is provided on the locking rod (23) located between the ear plate (22) and the plug, and a handle (25) is provided on the locking rod (23) located on the upper side of the ear plate (22).

9. The labor-saving tool for facilitating valve operation according to claim 1, characterized in that: The telescopic handle (4) includes a fixed rod (26) and a sleeve (27). One end of the fixed rod (26) is fixedly connected to the rotating drum (3), and the other end is inserted into the sleeve (27). Anti-detachment posts (28) are respectively provided on opposite sides of the fixed rod (26). An adjustment groove (29) for accommodating the anti-detachment posts (28) is provided on the sleeve (27).

10. The labor-saving tool for facilitating valve operation according to claim 1, characterized in that: The chassis (1) is provided with an arc-shaped weight-removing hole (30) that penetrates the chassis (1), and the arc-shaped weight-removing hole (30) and the claw (2) are alternately arranged.

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