A new type of labor-saving universal anti-slip valve wrench

Abstract

The present invention discloses a novel labor-saving universal anti-slip valve wrench. It comprises a clamping part and a gripping part, wherein the clamping part is arranged downward at the front end of the gripping part, and an anti-slip hook is arranged at the bottom of the clamping part. The clamping part comprises a first clamping part and a second clamping part, and the first clamping part and the second clamping part are combined to form a "∧"-shaped structure, and the cross-section of the first clamping part and the second clamping part is an inward concave arc shape, and clamping convex teeth are symmetrically and continuously arranged on the clamping inner wall of the first clamping part and the second clamping part, and an occlusal groove is arranged between adjacent clamping convex teeth, and a Y-shaped valve clamping part is connected to the rear end of the gripping part. The gain effect of the present invention is that the present invention can realize seamless engagement between the wrench and the valve edge through the design of the clamping part with an inward concave arc shape, combined with the clamping convex teeth continuously arranged on the inner side, and the operation is more secure; the design of the present invention is smaller in size, more material-saving, more labor-saving in operation, more secure in engagement, and relatively not easy to disengage. It can be applied to operate valves of various models, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of valve opening and closing equipment, and more specifically, to a novel labor-saving universal anti-slip valve wrench. Background Art

[0002] In the generator sets of existing thermal power plants, valves are one of the most used components in the equipment of the units. Valves play an important role in controlling the on-off of the unit system. The opening and closing efficiency of the valves directly affects the production of the unit. Due to the different sizes of valves, the heavy weight of the valves themselves and the high pressure they need to bear in the equipment, the operators cannot directly open and close the valves by holding them, and they need to use auxiliary tools of corresponding specifications to complete the opening and closing operations of the valves.

[0003] At present, the main valve opening and closing auxiliary tool commonly used in production and maintenance is the F-type wrench. The opening and grip of the F-type wrench are F-shaped. When in use, the opening is tilted and stuck on the handle of the outer ring of the valve, and the valve is driven to rotate by exerting force outward. However, there is always a gap between the width of the wrench opening and the grip of the outer ring of the valve, which eventually leads to the direction of the force applied to the opening clamping part deviating from the tangent direction of the wrench fulcrum when opening and closing the valve. The larger the gap between the width of the wrench opening and the edge of the valve, the farther the deviation, and the more laborious the operation. In addition, valves are of different sizes, and the spacing between the opening clamping parts of the F-type wrench is fixed, so that an F-type wrench can only be applied to some valves. Valves that are too large or too small will make the wrench carried unsuitable. During inspection and maintenance, the operator must carry multiple F-type wrenches of different models. The F-type wrench is made of iron, which is not only heavy and difficult to carry, increasing the burden on the operator, but also has a certain risk of falling objects from high altitude when working at heights.

[0004] At present, movable wrenches are also used in production for opening and closing operations. Although the scope of application is wider than that of fixed F-type wrenches, the application number is: 202020093476.5, and the name of the invention is: an easy-to-use non-slip F-type wrench, which adopts a threaded movable structure combined with an electric mechanism for adjustment. When operating different valves, it is always necessary to adjust the size of the wrench opening multiple times to make the wrench opening adapt to the valve to be operated. The threads of the movable adjustment structure are worn and deformed during use, resulting in problems such as adjustment jamming and loosening of the opening when clamping and rotating, and an electric movable adjustment mechanism is added, which has a complex structure, short service life, heavy weight, and difficulty in carrying.

[0005] Therefore, a valve wrench that is both convenient to carry and highly versatile is needed to solve the problems existing in the existing F-type valve wrenches during construction and use. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the above-mentioned existing F-type wrenches and provide a valve wrench with a new structure that has a wide range of applications, labor-saving operation, simple structure, light weight and is easy to carry.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A novel labor-saving universal anti-slip valve wrench comprises a clamping portion and a gripping portion, wherein the clamping portion is arranged downward at the front end of the gripping portion, and an inwardly bent anti-slip hook is arranged at the bottom of the clamping portion, and the clamping portion comprises a first clamping portion and a second clamping portion, and a clamping bayonet is formed between the first clamping portion and the second clamping portion, and the clamping bayonet is used to clamp the outer ring handle of the valve, and the first clamping portion and the second clamping portion are combined to form a "∧"-shaped structure, and the cross-section of the first clamping portion and the second clamping portion is an inwardly concave arc shape, and the inwardly concave arc shape has the same curvature as the outer ring handle of the valve, so that the clamping portion is fitted with the outer ring handle of the valve, so that the clamping portion is clamped on the outer ring handle of the valve to ensure that the gripping portion is always located in the radially extended position of the valve and the front end portion points to the center of the valve.

[0009] Clamping convex teeth are symmetrically and continuously arranged on the clamping inner walls of the first clamping part and the second clamping part, and the clamping convex teeth are used to fix and clamp the valve outer ring handle between the first clamping part and the second clamping part. The clamping convex teeth include first clamping convex teeth, second clamping convex teeth and auxiliary clamping teeth. The first clamping convex teeth, the second clamping convex teeth and the auxiliary clamping teeth are arranged in a stepped manner. The first clamping convex teeth are arranged below the second clamping convex teeth. The first clamping convex teeth are used to fix the valve outer ring handle with a larger width, and the second clamping convex teeth are used to fix the valve outer ring handle with a smaller width. The auxiliary clamping teeth are continuously arranged above the first clamping convex teeth and above the second clamping convex teeth. The valve outer ring handle can be firmly and tightly clamped in the first clamping part and the second clamping part through the auxiliary clamping teeth, and valve outer ring handles with more widths can also be used.

[0010] Preferably, the distance between the two symmetrically arranged first clamping protrusions is set to 3-5 cm, and the distance between the two symmetrically arranged second clamping protrusions is set to 1-2.5 cm.

[0011] Furthermore, the spacing between the two symmetrically arranged first clamping protrusions is preferably 3 cm, and the spacing between the two symmetrically arranged second clamping protrusions is preferably 1 cm.

[0012] Preferably, the protruding thickness of the first clamping tooth is 0.25-0.5cm, and the protruding thickness of the second clamping tooth is 0.2-0.4cm, ensuring that the first clamping tooth and the second clamping tooth can be firmly clamped on the valve handle of the corresponding width, and the protruding thickness of the auxiliary clamping tooth is 0.1-0.2cm, combined with the auxiliary clamping tooth with a thickness of 0.1-0.2cm.

[0013] Preferably, an engaging groove is provided between adjacent clamping convex teeth, and the engaging groove restricts the valve handle to be clamped inside the engaging groove, thereby providing greater assistance to the wrench in driving the valve to rotate.

[0014] Preferably, a connecting guide hole is opened at the rear end of the gripping portion, a connecting portion is provided inside the connecting guide hole, a Y-shaped valve clamping portion is installed at the rear end of the gripping portion through the connecting guide hole, and the Y-shaped valve clamping portion can be used to clamp and rotate small valves, gear-type valves and other types of valves.

[0015] The Y-shaped valve clamping part includes a connecting part and a clamping claw part. The outer wall of the connecting part is provided with a combination part. The connecting part can be detachably installed in the connecting guide hole by cooperating with the combination part and the connecting part. The two outwardly expanded clamping arm connecting parts of the clamping claw part form a Y-shaped structure. The inner wall of the clamping claw part is continuously provided with locking convex teeth, and there are locking grooves between adjacent locking convex teeth. The end of the clamping arm is provided with a locking hook part.

[0016] Preferably, the contact end surfaces of the clamping protrusion and the locking protrusion are arc-shaped, so that the valve can be more easily clamped into the clamping protrusion and the locking protrusion.

[0017] Preferably, the distance between the locking convex teeth arranged opposite to each other at the front end is 3-8 cm.

[0018] Preferably, the connecting portion of the connecting guide hole is a connecting internal thread, and the combining portion of the connecting portion is a connecting external thread. The connecting external thread cooperates with the connecting internal thread, and the connecting portion is rotatably mounted to the rear end of the gripping portion through a threaded connection, and is firmly combined.

[0019] Preferably, the connecting part of the connecting guide hole is an L-shaped limiting groove, and the combined part of the connecting part is a limiting protrusion, and the limiting protrusion cooperates with the L-shaped limiting groove. Through the limiting protrusion and the L-shaped limiting groove, the Y-shaped valve clamping part can be installed into the connecting guide hole of the holding part more quickly, which is convenient for installation.

[0020] Preferably, an anti-slip convex pattern is provided in the middle of the gripping portion, and a gripping sleeve is provided on the anti-slip convex pattern. By providing the gripping sleeve, rigid contact between the palm and the gripping portion can be avoided, thereby solving the problem of excessive concentrated stress on the palm by the gripping portion when exerting force to turn the valve. At the same time, gripping grooves are provided on the front and rear sides of the gripping sleeve. The gripping grooves are symmetrically arranged on the left and right sides of the gripping portion, with four gripping grooves on each side, so that the operator can use the outer auxiliary hand to hold and exert force when exerting force to turn the valve to promote the rotation of the valve.

[0021] Compared with the prior art, the present invention has the following gain effects:

[0022] The invention adopts the design of the clamping part with an inward concave arc shape, which can achieve seamless engagement between the wrench and the edge of the valve, and is more stable to operate. The clamping part is tightly fitted on the outer ring handle of the valve, and the gripping part is always kept in the radial extension position of the valve when rotating, with the front end pointing to the center of the valve. It is more labor-saving, lightweight, and safer than the existing F-type wrench and adjustable wrench, and can effectively reduce the labor intensity of the operator during operation. Combined with the inwardly curved anti-detachment hook at the bottom of the clamping part, the wrench is not easy to slip after engaging the valve.

[0023] The present invention adopts a clamping bayonet formed by a "∧"-shaped structure, and a stepped clamping convex tooth is provided on the inner side wall of the clamping bayonet, which can adaptively clamp and bite the outer ring handle of valves of different types. It has a wide range of applications. When operating at the construction site, only a new type of labor-saving universal anti-slip valve wrench needs to be carried, which can open and close all different types of valves in the working area, and is easy to carry.

[0024] The present invention arranges a gripping sleeve on the gripping portion, combined with gripping grooves on both sides, so that the operator can exert better force when using the present invention to rotate the valve to open and close, while protecting the inside of the operator's palm from rigid pressure.

[0025] The auxiliary Y-shaped wrench part added at the rear end of the present invention can quickly open and close small valves of different models at the construction site at any time. The auxiliary Y-shaped wrench part also has the advantages of small size, convenient disassembly and assembly, easy operation and firm connection.

[0026] Compared with the existing general F-type wrenches and adjustable wrenches, the present invention is designed to operate the same type of valves with a smaller size, less material, and easier to carry. Compared with the F wrench of the same size, the valve wrench of the present invention applies a larger effective torque to the valve, is more labor-saving to operate, has a more secure bite, and is relatively difficult to disengage. At the same time, the clamping convex teeth and the grooves symmetrically arranged in the oblique supporting bayonet adopted by the present invention are distributed in a stepped manner, so that the present invention can operate valves of various models, effectively solving the problem of frequently replacing different models of F wrenches to operate different models of valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the valve wrench of the present invention.

[0029] Figure 3 It is a schematic cross-sectional view of the clamping portion along the AA line of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the Y-type valve clamping part of the present invention.

[0031] Figure 5 This is a force analysis of the existing F wrench when in use.

[0032] Figure 6 The present invention provides a force analysis of the valve wrench when in use.

[0033] Figure 7 It is a schematic diagram of the use of the Y-type valve clamping part of the present invention.

[0034] Figure 8 It is a schematic diagram of the connecting portion of the connecting guide hole of the present invention.

[0035] Fig. 9 It is a schematic diagram of the assembly part of the connecting part of the present invention.

[0036] Description of Figure Numbers:

[0037] Clamping part -1, holding part -2, anti-slip hook -4, first clamping part -5, second clamping part -6, clamping bayonet -7, clamping convex tooth -8, first clamping convex tooth -9, second clamping convex tooth -10, auxiliary clamping tooth -11, bite groove -12, connecting guide hole -13, Y-type valve clamping part -3, connecting part -14, clamping claw part -15, clamping arm -16, locking convex tooth -17, locking groove -18, anti-slip convex pattern -19, holding sleeve -20, holding groove -21, locking hook part -22, combination part -23, connecting part -24. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] In order to enable the examiners to have a further understanding of the purpose, features and functions of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings:

[0041] See also Figure 1-9 The present invention is a novel labor-saving universal anti-slip valve wrench, comprising a clamping part 1 and a gripping part 2. The clamping part 1 is arranged downward at the front end of the gripping part 2, and an inwardly bent anti-slip hook 4 is provided at the bottom of the clamping part 1. The anti-slip hook 4 at the bottom of the clamping part 1 can prevent the valve wrench from loosening during rotation when it is clamped on the outer ring handle of the valve.

[0042] like Figure 2 As shown, the clamping part 1 of the present invention includes a first clamping part 5 and a second clamping part 6, a clamping bayonet 7 is formed between the first clamping part 5 and the second clamping part 6, and the clamping bayonet 7 is used to clamp the outer ring handle of the valve, and the first clamping part 5 and the second clamping part 6 are combined to form a "∧"-shaped structure, such as Figure 3 As shown, the cross-section of the first clamping portion 5 and the second clamping portion 6 is a concave arc shape, and the concave arc shape is the same as the curvature of the valve outer ring handle, so that the clamping portion 1 is fitted with the valve outer ring handle, and the clamping portion 1 is clamped on the valve outer ring handle to ensure that the holding portion 2 is always located in the radial extension position of the valve and the front end portion points to the center of the valve.

[0043] Clamping convex teeth 8 are symmetrically and continuously arranged on the clamping inner walls of the first clamping part 5 and the second clamping part 6, and the clamping convex teeth 8 are used to fix and clamp the valve outer ring handle between the first clamping part 5 and the second clamping part 6. The clamping convex teeth 8 include first clamping convex teeth 9, second clamping convex teeth 10 and auxiliary clamping teeth 11. The first clamping convex teeth 9, the second clamping convex teeth 10 and the auxiliary clamping teeth 11 are arranged in a stepped manner. The first clamping convex teeth 9 are arranged below the second clamping convex teeth 10. The first clamping convex teeth 9 are used to fix the valve outer ring handle with a larger width, and the second clamping convex teeth 10 are used to fix the valve outer ring handle with a smaller width. The auxiliary clamping teeth 11 are continuously arranged above the first clamping convex teeth 9 and above the second clamping convex teeth 10. The valve outer ring handle can be firmly and tightly clamped in the first clamping part 5 and the second clamping part 6 through the auxiliary clamping teeth 11, and valve outer ring handles with more widths can also be used.

[0044] Preferably, the distance between the two symmetrically arranged first clamping protrusions 9 is set to 3-5 cm, and the distance between the two symmetrically arranged second clamping protrusions 10 is set to 1-2.5 cm.

[0045] Furthermore, the distance between the two symmetrically arranged first clamping protrusions 9 is set to 3 cm, and the distance between the two symmetrically arranged second clamping protrusions 10 is set to 1 cm.

[0046] Preferably, the protruding thickness of the first clamping teeth 9 is 0.25-0.5 cm, the protruding thickness of the second clamping teeth 10 is 0.2-0.4 cm, and the protruding thickness of the auxiliary clamping teeth 11 is 0.1-0.2 cm.

[0047] Preferably, an engaging groove 12 is provided between adjacent clamping teeth 8 , and the engaging groove 12 limits the valve handle to be clamped inside the engaging groove 12 , thereby providing greater assistance to the wrench in driving the valve to rotate.

[0048] Preferably, if Figure 2 and Figure 4 As shown, the rear end of the gripping portion 2 is provided with a connecting guide hole 13, the inner side of the connecting guide hole 13 is provided with a connecting portion 24, and the rear end of the gripping portion 2 is provided with a Y-shaped valve clamping portion 3 through the connecting guide hole 13. The Y-shaped valve clamping portion 3 can be used to clamp and rotate small valves, gear-type valves and other types of valves, such as Figure 4As shown, the Y-shaped valve clamping portion 3 includes a connecting portion 14 and a clamping claw portion 15, the outer wall of the connecting portion 14 is provided with a combination portion 23, the connecting portion 14 is detachably installed in the connecting guide hole 13 through the combination portion 23 and the connecting portion 24, the two outwardly expanded clamping arms 16 of the clamping claw portion 15 and the connecting portion 14 form a Y-shaped structure, the inner wall of the clamping claw portion 15 is continuously provided with locking convex teeth 17, and the locking grooves 18 are between adjacent locking convex teeth 17, and the end of the clamping arm 16 is provided with a locking hook portion 22.

[0049] Preferably, the contact end surfaces of the clamping protruding teeth 8 and the locking protruding teeth 17 are arc-shaped, so that the valve can be more easily clamped into the clamping protruding teeth 8 and the locking protruding teeth 17.

[0050] Preferably, the distance between the locking protruding teeth 17 arranged opposite to each other at the front end is 3-8 cm.

[0051] Preferably, the front end of the connecting guide hole 13 is provided with a connecting internal thread, and the rear end of the connecting part 14 is provided with a connecting external thread. The connecting external thread cooperates with the connecting internal thread, and the connecting part 14 is rotatably installed to the rear end of the gripping part 2 through threaded connection, which is convenient for disassembly and assembly.

[0052] Preferably, the connecting portion 24 of the connecting guide hole 13 is an internal connecting thread, and the combining portion 23 of the connecting portion 14 is an external connecting thread. The external connecting thread cooperates with the internal connecting thread, and the connecting portion is rotated and installed to the rear end of the gripping portion through threaded connection, and is firmly combined.

[0053] Preferably, if Figure 8-9 As shown, the connecting portion 24 of the connecting guide hole 13 is an L-shaped limiting groove, and the combining portion 23 of the connecting portion 14 is a limiting protrusion, which cooperates with the L-shaped limiting groove. The limiting protrusion and the L-shaped limiting groove can play a role in more quickly installing the Y-shaped valve clamping portion 3 into the connecting guide hole 13 of the holding portion 2, which is convenient for installation.

[0054] Preferably, an anti-slip ridge 19 is provided in the middle of the gripping portion 2, and a gripping sleeve 20 is provided on the anti-slip ridge 19. By providing the gripping sleeve 20, rigid contact between the palm and the gripping portion 2 is avoided, thereby solving the problem of excessive concentrated stress on the palm by the gripping portion 2 when the valve is turned with force. At the same time, gripping grooves 21 are provided on the front and rear sides of the anti-slip ridge 19. The gripping grooves 21 are symmetrically arranged on the left and right sides of the gripping portion 2, and four gripping grooves 21 are provided on each side of the left and right sides, so that the operator can use the outer auxiliary hand to hold and exert force when turning the valve to promote the rotation of the valve.

[0055] Embodiment 1:

[0056] Before going to the construction site, first select a Y-shaped valve clamping part 3 with the widest distance between the oppositely arranged locking teeth 17 being 5 cm, and install it into the connecting guide hole 13 with a rear end of the holding part 2 through the connecting part 14, and then combine the connecting part 24 of the connecting internal thread of the connecting guide hole 13 with the combining part 23 of the connecting external thread of the connecting part 14 for fastening and assembly installation.

[0057] In this embodiment, a new type of labor-saving, universal, anti-slip valve wrench is selected, in which the spacing between the two symmetrically arranged first clamping teeth 9 of the clamping part 1 is set to 3 cm, the protruding thickness of the first clamping teeth 9 is 0.4 cm, the spacing between the two symmetrically arranged second clamping teeth 10 is set to 1 cm, the protruding thickness of the second clamping teeth 10 is 0.3 cm, and the protruding thickness of the auxiliary clamping teeth 11 is 0.2 cm, for opening and closing the valve.

[0058] When in use, align the clamping bayonet 7 with the valve outer ring handle, and then press down the first clamping part 5 and the second clamping part 6 through the holding part 2, so that the clamping convex teeth 8 of the clamping inner wall pass through the edge of the valve outer ring handle one by one, until the engaging groove 12 is engaged with the two side surfaces of the valve outer ring handle. When it is necessary to operate the valve with a diameter of 3 cm on the valve outer ring handle, it is only necessary to press the first clamping convex teeth 9 and the auxiliary clamping teeth 11 above the first clamping convex teeth 9 onto the edge of the valve outer ring handle, and fix the valve outer ring handle through the engaging groove 12 between the first clamping convex teeth 9 and the auxiliary clamping teeth 11, and then combine the concave arc-shaped first clamping part 5 and the second clamping part 6, so that the clamping part 1 is tightly and firmly attached to the outer wall of the valve outer ring handle, and the preliminary installation is completed.

[0059] When it is necessary to operate a valve with a valve outer ring handle diameter less than 3 cm, it is only necessary to continue pressing down until the engaging grooves 12 between the clamping convex teeth 8 are engaged with the outer wall of the valve outer ring handle.

[0060] Then, one hand holds the holding sleeve 20, and the other hand holds the holding groove 21 on the outside of the holding portion 2, and the fingers are respectively placed on the holding grooves 21, and force is applied in the valve opening direction to drive the valve to rotate, thereby completing the opening of the valve.

[0061] After the operation is completed, when it is necessary to open and close the outer ring handle of the valve of other diameters, the valve handle can be removed by gently shaking the grip part 2 upwards, and the clamping bayonet 7 is aligned with the outer ring handle of the valve with operation and pressed down again to complete the combination for opening and closing operation through the engagement of the clamping convex teeth 8.

[0062] When the valve outer ring handle comes out of the bite groove 12 during the rotation process, the valve outer ring handle can be clamped by the anti-fall-off hook 4 arranged at the bottom of the clamping part 1 to prevent the valve wrench from rotating out. The valve outer ring handle and the bite groove 12 can be quickly restored to fit together through adjustment, and the valve opening operation can be continued.

[0063] When you need to close the valve, just repeat the above steps and apply force in the opposite direction to rotate the valve to the closed position.

[0064] When encountering some small diameter gear-type valves at the construction site, such as Figure 7 As shown, the clamping claw portion 15 of the Y-type valve clamping portion 3 can be horizontally clamped on the outer wall of the gear, and the Y-type valve clamping portion 3 can be pushed inward so that the clamping convex teeth 17 on the inner side of the clamping arm 16 are clamped on the gear protrusion, and the clamping groove 18 is engaged with the gear protrusion. By holding the holding portion 2 and exerting force forward, the gear-type valve can be opened to carry out subsequent construction. After the construction is completed, repeat the above steps and use the Y-type valve clamping portion 3 to drive the gear-type valve to rotate to the closed position.

[0065] When the gear-type valve is loosened due to inadequate engagement during operation, the protruding portion of the gear-type valve is hooked again by the engaging hook portion 22 provided at the end of the clamping arm 16 of the Y-type valve clamping portion 3 to prevent the Y-type valve clamping portion 3 from detaching from the gear-type valve, and then the Y-type valve clamping portion 3 is pushed forward again to engage the engaging groove 18 of the Y-type valve clamping portion 3 with the protruding portion of the gear-type valve to continue the opening and closing operation of the valve.

[0066] Embodiment 2:

[0067] Before going to the construction site, first select the Y-shaped valve clamping part 3 with the widest distance between the oppositely arranged locking convex teeth 17 being 8 cm and install it into the connecting guide hole 13 opened at the rear end of the gripping part 2 through the connecting part 14, such as Figure 8-9 As shown, the connecting portion 24 of the limiting protrusion connected to the guide hole 13 is pushed inwardly for installation along the combined portion 23 of the connecting portion 14 connected to the L-shaped limiting groove until the limiting protrusion contacts the turning portion of the L-shaped limiting groove, and rotates along the fixing portion so that the limiting protrusion is clamped into the fixing portion of the L-shaped limiting groove, thereby completing the clamping and combined installation.

[0068] In this embodiment, a new type of labor-saving, universal, anti-slip valve wrench is selected, in which the spacing between the two symmetrically arranged first clamping teeth 9 of the clamping part 1 is set to 5 cm, the protruding thickness of the first clamping teeth 9 is 0.5 cm, the spacing between the two symmetrically arranged second clamping teeth 10 is set to 2.5 cm, the protruding thickness of the second clamping teeth 10 is 0.4 cm, and the protruding thickness of the auxiliary clamping teeth 11 is 0.2 cm, for opening and closing the valve.

[0069] When in use, align the clamping bayonet 7 with the valve outer ring handle, and then press down the first clamping part 5 and the second clamping part 6 through the holding part 2, so that the clamping convex teeth 8 of the clamping inner wall pass through the edge of the valve outer ring handle one by one, until the engaging groove 12 is engaged with the two side surfaces of the valve outer ring handle. When it is necessary to operate the valve with a diameter of 5 cm on the valve outer ring handle, it is only necessary to press the first clamping convex teeth 9 and the auxiliary clamping teeth 11 above the first clamping convex teeth 9 onto the edge of the valve outer ring handle, and fix the valve outer ring handle through the engaging groove 12 between the first clamping convex teeth 9 and the auxiliary clamping teeth 11, and then combine the concave arc-shaped first clamping part 5 and the second clamping part 6, so that the clamping part 1 is tightly and firmly attached to the outer wall of the valve outer ring handle to complete the preliminary installation.

[0070] When it is necessary to operate a valve with a valve outer ring handle diameter less than 5 cm and greater than 2.5 cm, just continue to press down until the engaging groove 12 between the first clamping protrusion 9 and the second clamping protrusion 10 is engaged with the outer wall of the valve outer ring handle.

[0071] When it is necessary to operate a valve with a valve outer ring handle diameter less than 2.5 cm, just continue to press down until the engagement groove 12 between the second clamping protrusion 10 and the upper third clamping tooth 11 is engaged with the outer wall of the valve outer ring handle.

[0072] Then hold the holding sleeve 20 with one hand and the holding groove 21 on the outside of the holding part 2 with the other hand, place the fingers on the holding grooves 21 respectively, apply force in the valve opening direction to drive the valve to rotate, and complete the opening of the valve. After the operation is completed, the valve handle can be removed by gently shaking the holding part 2 upwards.

[0073] When you need to close the valve, just repeat the above steps and apply force in the opposite direction to rotate the valve to the closed position.

[0074] Embodiment 3:

[0075] Before going to the construction site, first select the Y-shaped valve clamping part 3 with the widest distance between the oppositely arranged locking convex teeth 17 being 4 cm and install it into the connecting guide hole 13 opened at the rear end of the gripping part 2 through the connecting part 14, such as Figure 8-9 As shown, the connecting portion 24 of the limiting protrusion connected to the guide hole 13 is pushed inward for installation along the combined portion 23 of the connecting portion 14 connected to the L-shaped limiting groove until the limiting protrusion contacts the turning portion of the L-shaped limiting groove, and rotates along the fixing portion to make the limiting protrusion clamped into the fixing portion of the L-shaped limiting groove, thereby completing the clamping and combined installation. At the same time, the Y-shaped valve clamping portion 3 with the widest distance between the opposing clamping protrusions 17 being 6 cm is carried. The Y-shaped valve clamping portion 3 is small in size and can be placed in a pocket for easy carrying.

[0076] In this embodiment, a new type of labor-saving, universal, anti-slip valve wrench is selected, in which the spacing between the two symmetrically arranged first clamping teeth 9 of the clamping part 1 is set to 4 cm, the protruding thickness of the first clamping teeth 9 is 0.2 cm, the spacing between the two symmetrically arranged second clamping teeth 10 is set to 2 cm, the protruding thickness of the second clamping teeth 10 is 0.2 cm, and the protruding thickness of the auxiliary clamping teeth 11 is 0.1 cm, for opening and closing the valve.

[0077] When in use, align the clamping bayonet 7 with the valve outer ring handle, and then press down the first clamping part 5 and the second clamping part 6 through the holding part 2, so that the clamping convex teeth 8 of the clamping inner wall pass through the edge of the valve outer ring handle one by one, until the engaging groove 12 is engaged with the two side surfaces of the valve outer ring handle. When it is necessary to operate the valve with a diameter of 4 cm on the valve outer ring handle, it is only necessary to press the first clamping convex teeth 9 and the auxiliary clamping teeth 11 above the first clamping convex teeth 9 onto the edge of the valve outer ring handle, and fix the valve outer ring handle through the engaging groove 12 between the first clamping convex teeth 9 and the auxiliary clamping teeth 11, and then combine the concave arc-shaped first clamping part 5 and the second clamping part 6, so that the clamping part 1 is tightly and firmly attached to the outer wall of the valve outer ring handle to complete the preliminary installation.

[0078] Then hold the holding sleeve 20 with one hand and the holding groove 21 on the outside of the holding part 2 with the other hand, place the fingers on the holding grooves 21 respectively, apply force in the valve opening direction to drive the valve to rotate, and complete the opening of the valve. After the operation is completed, the valve handle can be removed by gently shaking the holding part 2 upwards.

[0079] When you need to close the valve, just repeat the above steps and apply force in the opposite direction to rotate the valve to the closed position.

[0080] like Figure 7 As shown, when encountering some gear-type valves with a diameter less than 4 cm at the construction site, the clamping claw portion 15 of the Y-type valve clamping portion 3 can be horizontally clamped on the outer wall of the gear, and the Y-type valve clamping portion 3 can be pushed inward, so that the clamping convex teeth 17 on the inner side of the clamping arm 16 are clamped on the gear protrusion, and the clamping groove 18 is engaged with the gear protrusion. By holding the holding rod 2 and exerting force forward, the gear-type valve can be opened to carry out subsequent construction. After the construction is completed, repeat the above steps and use the Y-type valve clamping portion 3 to drive the gear-type valve to rotate to the closed position.

[0081] When it is necessary to operate a gear-type valve with a diameter greater than 4 cm, it is only necessary to rotate and pull out the installed Y-type valve clamping part 3 with a maximum spacing of 4 cm along the path of the L-shaped limit groove, and then take out the Y-type valve clamping part 3 with a maximum distance between the locking protruding teeth 17 of 6 cm, and push the combination part 23 of the limiting protrusion of the connecting part 14 inward along the connecting part 24 of the connecting guide hole 13 connected to the L-shaped limit groove for installation until the limiting protrusion contacts the turning part of the L-shaped limit groove, and rotate along the fixing part so that the limiting protrusion is stuck in the fixing part of the L-shaped limit groove, thereby completing the replacement installation of the Y-type valve clamping part 3 and continuing to open and close the gear-type valve.

[0082] The novel labor-saving universal anti-slip valve wrench provided by the present invention has a clamping portion 1 with a "∧"-shaped structure, a clamping bayonet 7 formed by a first clamping portion 5 and a second clamping portion 6, and a stepped clamping convex tooth 8 is provided on the inner side wall thereof, and an engaging groove 12 is provided between the clamping convex teeth 8, so as to clamp and engage the outer ring handles of valves of different sizes.

[0083] Auxiliary clamping teeth 11 with a smaller protruding thickness are additionally provided above the first clamping convex teeth 9 and the second clamping convex teeth 10 to meet the bite requirements of valves of more sizes. The spacing between the clamping convex teeth 8 is set with a gradually decreasing bite size to match the outer width of valves of different types that need to be operated. Combined with the first clamping part 5 and the second clamping part 6 involved in the concave arc shape, a secure bite of the valve is achieved, and seamless fitting is achieved between the clamping convex teeth 8 and the bite grooves 12 and on both sides of the edge of the valve outer ring handle, so that the gripping part 2 of the new labor-saving universal anti-slip valve wrench of the present invention always points to the center of the valve, so that the effective torque applied by the operator on the valve is maximized.

[0084] Comparison of effective torque between the new labor-saving universal anti-slip valve wrench of the present invention and the existing F-type wrench:

[0085] like Figure 5 The figure shows the force analysis of the valve turntable when the existing F-type wrench is used to operate the valve: The effective torsional torque applied by the existing F-type wrench on the valve: P 1 =F*cosα*R,

[0086] Wherein, F represents the force applied by the operator to the wrench grip, R represents the radius of the valve outer ring, and α represents the angle formed by the force applied by the operator to the wrench grip and the radial direction of the valve circle pointing to the wrench.

[0087] like Figure 6 As shown in the figure, the force analysis of the valve turntable when the new labor-saving universal anti-slip valve wrench of the present invention is operated on the valve: the effective torsional moment applied on the valve by the new labor-saving universal anti-slip valve wrench of the present invention is: P 2 =F*R.

[0088] And because the gripping part of the F-type wrench is circular, the F-type wrench cannot keep pointing to the center of the valve after gripping the outer ring handle of the valve, so cosα < 1, so P 2 >P 1 ;

[0089] From the above analysis, it can be concluded that, even when the same force is applied to the same valve, the effective torsional torque generated by the new labor-saving universal anti-slip valve wrench of the present invention is greater than that of the existing F-type wrench, and it is more labor-saving.

[0090] The wrench of the present invention can be made of copper or high-quality solid steel bars according to the requirements of applicable places.

[0091] The gripping portion 2 of the present invention is similar in shape to a general F-type wrench, but a gripping sleeve 20 is provided on the gripping portion 2, and an anti-slip ridge 19 is provided in the middle of the gripping portion 2, so that the operator will not slip when holding the gripping portion 2 for rotation operation, and the rigid contact between the palm and the gripping portion 2 is effectively avoided, which solves the problem of excessive concentrated stress on the palm by the gripping portion 2 when the valve is turned. At the same time, gripping grooves 21 are provided on the front and rear sides of the anti-slip ridge 19, which can make it more convenient for the operator to use the outer auxiliary hand to hold and exert force when turning the valve to promote the rotation of the valve.

[0092] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A new type of labor-saving universal anti-slip valve wrench, characterized in that: The invention comprises a clamping part and a holding part, wherein the clamping part is arranged downward at the front end of the holding part, and an anti-dropping hook is arranged inwardly bent at the bottom of the clamping part, and the clamping part comprises a first clamping part and a second clamping part, and a clamping bayonet is formed between the first clamping part and the second clamping part, and the first clamping part and the second clamping part are combined to form a "∧"-shaped structure, and the cross-section of the first clamping part and the second clamping part is an inward concave arc shape, and the curvature of the inward concave arc shape is the same as the curvature of the valve handle, and clamping convex teeth are symmetrically and continuously arranged on the clamping inner walls of the first clamping part and the second clamping part, and the clamping convex teeth comprise a first clamping convex tooth, a second clamping convex tooth and an auxiliary clamping tooth, and the first clamping convex tooth, the second clamping convex tooth and the auxiliary clamping tooth are arranged in a stepped manner, and the first clamping convex tooth is arranged below the second clamping convex tooth, and the auxiliary clamping teeth are continuously arranged above the first clamping convex tooth and above the second clamping convex tooth, The distance between the two symmetrically arranged first clamping protrusions is set to 3-5 cm, and the distance between the two symmetrically arranged second clamping protrusions is set to 1-2.5 cm. The protruding thickness of the first clamping protruding teeth is 0.25-0.5 cm, the protruding thickness of the second clamping protruding teeth is 0.2-0.4 cm, and the protruding thickness of the auxiliary clamping teeth is 0.1-0.2 cm. An engaging groove is provided between adjacent clamping protruding teeth, and the valve handle is limitedly clamped in the engaging groove. A connecting guide hole is provided at the rear end of the gripping part, a connecting part is provided inside the connecting guide hole, a Y-type valve clamping part is installed at the rear end of the gripping part through the connecting guide hole, the Y-type valve clamping part includes a connecting part and a clamping claw part, a combination part is provided on the outer wall of the connecting part, the connecting part can be detachably installed in the connecting guide hole through the combination part and the connecting part, two clamping arms of the clamping claw part that are arranged outwardly form a Y-shaped structure with the connecting part, the inner wall of the clamping claw part is continuously provided with clamping convex teeth, and there are clamping grooves between adjacent clamping convex teeth, and a clamping hook part is provided at the end of the clamping arm, The connecting portion of the connecting guide hole is an L-shaped limiting groove, the combining portion of the connecting portion is a limiting protrusion, and the limiting protrusion cooperates with the L-shaped limiting groove. The contact end surfaces of the clamping convex teeth and the locking convex teeth are arc-shaped.

2. A new type of labor-saving universal anti-slip valve wrench according to claim 1, characterized in that: The distance between the oppositely arranged locking protruding teeth is 3-8 cm.

3. The novel labor-saving universal anti-slip valve wrench according to claim 1 is characterized in that: The connecting portion of the connecting guide hole is a connecting internal thread, the combining portion of the connecting portion is a connecting external thread, and the connecting external thread cooperates with the connecting internal thread.

4. The novel labor-saving universal anti-slip valve wrench according to claim 1 is characterized in that: The middle of the gripping part is provided with an anti-skid convex pattern, a gripping sleeve is provided on the anti-skid convex pattern, and gripping grooves are provided on the front and rear sides of the gripping sleeve. The gripping grooves are symmetrically arranged on the left and right sides of the gripping part, and four gripping grooves are arranged on each side.

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