Telescopic F wrench

Abstract

According to the telescopic F wrench, in the F wrench, a fixed jaw comprises a hollow handle and a pipe wrench part vertically extending from the top of the handle, and a rack is arranged on the side, close to the fixed jaw, of the handle; the movable jaw sleeves the handle and relatively slides along the handle so as to adjust the distance between the fixed jaw and the movable jaw, and the movable jaw is provided with a first bolt hole and a worm groove; the worm is contained in the worm groove and meshed with the rack, a second bolt hole is formed in the center of the worm, and the worm rotates along the rack to drive the movable jaw to move along the handle of the fixed jaw; the worm bolt penetrates through the first bolt hole and the second bolt hole so that the worm can be assembled to the movable jaw. The telescopic rod is telescopically inserted into the handle; the fixing bolt is transversely arranged at the tail end of the handle to limit the telescopic rod; the cutter head of the breaking device is inserted into the end, opposite to the handle, of the telescopic rod in a sliding mode, and the cutter head of the breaking device is sleeved with the fixing sleeve of the breaking device. The telescopic F wrench improves the production efficiency, is easy to adjust and high in adaptability, and can be used for different working scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oil refining chemical industry, especially a telescopic F wrench. BACKGROUND

[0002] At present, the F wrench used for opening and closing valves in the oil refining chemical industry is mostly fixed, that is, the opening size cannot be adjusted. The pipe wrench handle used for installing or disassembling pipe cap pipe bolts is mostly fixed, that is, the length of the pipe wrench handle cannot be telescoped and adjusted. When breaking a rusted nut that is difficult to disassemble, the tool used is mostly a flame cutting gun or a single nut breaker, and the nut breaker is not effectively integrated with other commonly used tools. The staff in the oil refining chemical industry need a telescopic F wrench that can be used for opening and closing valves, installing or disassembling pipe caps, breaking rusted nuts, etc.

[0003] The above information disclosed in the background section is only used to enhance the understanding of the background of the utility model, and therefore can contain information that does not constitute prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a telescopic F wrench, which is convenient to adjust, has strong adaptability and can be used in different working scenes.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The telescopic F wrench comprises:

[0007] A fixed jaw, which comprises a hollow handle and a pipe wrench part extending vertically from the top of the handle, and a rack is arranged on one side of the handle close to the fixed jaw;

[0008] A movable jaw, which is sleeved on the handle and slides along the handle to adjust the distance between the fixed jaw and the movable jaw, and the movable jaw is provided with a first bolt hole and a worm groove;

[0009] A worm, which is accommodated in the worm groove and engages with the rack, and the center of the worm is provided with a second bolt hole, and the worm rotates along the rack to drive the movable jaw to move along the handle of the fixed jaw;

[0010] A worm bolt, which passes through the first bolt hole and the second bolt hole to assemble the worm with the movable jaw;

[0011] A telescopic rod, which is telescopically inserted into the handle;

[0012] A fixed bolt, which is transversely arranged at the end of the handle to limit the telescopic rod;

[0013] A breaker bit, which is slidably inserted into the end of the telescopic rod opposite to the handle,

[0014] The breaker fixing sleeve is sleeved on the breaker head.

[0015] The inner side of the fixed jaw and the inner side of the movable jaw opposite to the fixed jaw are both provided with pipe wrench teeth.

[0016] The handle is a hollow hexagonal prism, the front end of the telescopic rod is a hexagonal prism which can be inserted into the hollow hexagonal prism, the rear end of the telescopic rod is a cylinder, and the contour of the hexagonal prism of the telescopic rod and the contour of the cylinder are smaller than the contour of the hollow hexagonal prism.

[0017] The diameter of the cylinder is smaller than the diameter of the inscribed circle of the hexagonal prism at the front end of the cylinder.

[0018] The end of the handle is circular and has a thread for mounting the nut.

[0019] The front end of the outer side of the nut is circular, the rear end of the outer side of the nut is hexagonal, the inner side of the nut has two front end circles and rear end circles with different diameters, the front end circles have threads for mounting the end of the handle, and the rear end circles can pass through the cylinder at the rear end of the telescopic rod but cannot pass through the hexagonal prism at the front end.

[0020] The breaker fixing sleeve comprises a straight pipe section with threads on the inner wall, and the telescopic rod is screwed in or out of the breaker fixing sleeve through the straight pipe section.

[0021] The straight pipe section is provided with a prism slot at the tail side.

[0022] The breaker head is provided with a prism embedded in the prism slot.

[0023] The telescopic rod is screwed in or out of the breaker fixing sleeve along the threads.

[0024] In the above technical solution, the telescopic F wrench has the following beneficial effects: the size of the opening of the telescopic F wrench can be adjusted, so that the F wrench is suitable for opening and closing valves with different sizes; the fixed jaw and the movable jaw of the F wrench have pipe wrench teeth, which can be used for tightening pipes, pipe caps, bolts, nuts and the like; the end of the F wrench has a nut breaker, which can be used to break a nut which cannot be normally tightened due to rust. BRIEF DESCRIPTION OF DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a structural schematic diagram of the retractable F-wrench of this utility model.

[0027] Figure 2 This is an exploded view of the retractable F-wrench of this utility model.

[0028] Figure 3 This is a schematic diagram of the telescopic rod and nut of the telescopic F-wrench of this utility model.

[0029] Figure 4 This is an exploded view of the handle, nut, and fixing bolt of the retractable F-wrench of this utility model.

[0030] Figure 5 This is an exploded view of the telescopic rod, the cutting head, and the fixing sleeve of the telescopic F-wrench of this utility model.

[0031] Figure 6 This is a top view and a partial structural cross-sectional view of the retractable F-wrench of this utility model.

[0032] Figure 7 for Figure 6 A magnified schematic diagram of the inner part of the circle described in the figure. Detailed Implementation

[0033] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] 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.

[0035] It should be noted that like reference numerals and letters refer to like items in the several views, and that no further definitions and explanations of a certain item are required in the subsequent drawings once the item has been defined in one drawing.

[0036] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0037] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0038] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and oblique above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and oblique below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0040] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0041] As Figures 1-7 shown in one embodiment, the utility model discloses a telescopic F wrench,

[0042] Fixed jaw 1, including hollow handle and pipe tong part vertically extending from the top of handle, the handle is provided with rack near one side of fixed jaw 1;

[0043] Movable jaw 2, the sleeve is on the handle along the handle opposite sliding to adjust the distance between fixed jaw 1 and movable jaw 2, movable jaw 2 is provided with first bolt hole and worm 3 slot;

[0044] Worm 3, it is contained in the worm 3 slot and engages the rack, the center of worm 3 is provided with second bolt hole, and worm 3 rotates along the rack to drive movable jaw 2 to move along the handle of fixed jaw 1;

[0045] Worm bolt 4, it passes through the first bolt hole and second bolt hole to assemble worm 3 with movable jaw 2;

[0046] Telescopic rod 5, it is telescopically inserted in the handle;

[0047] Fixed bolt 9, it is transversely arranged at the end of handle to limit the telescopic rod 5;

[0048] Breaker cutter head 7, it is slidingly inserted in the end of telescopic rod 5 opposite to the handle,

[0049] Breaker fixing sleeve 8, it is sleeved on breaker cutter head 7.

[0050] The preferred embodiment of the telescopic F wrench, the inner side of fixed jaw 1 and movable jaw 2 opposite is provided with pipe tong tooth.

[0051] The preferred embodiment of the telescopic F wrench, the handle is hollow hexagonal prism, the front end of telescopic rod 5 is hexagonal prism that can be inserted into hollow hexagonal prism, and the rear end is cylinder, and the contour of the hexagonal prism of telescopic rod 5 and the contour of the cylinder are smaller than the contour of the hollow hexagonal prism.

[0052] The preferred embodiment of the telescopic F wrench, the diameter of the cylinder is smaller than the diameter of the incircle of the front end hexagonal prism.

[0053] The preferred embodiment of the telescopic F wrench, the end of the handle is circular, and has the thread of mounting nut 6.

[0054] In the preferred embodiment of the telescopic F wrench, the outer front end of the nut 6 is circular, the rear end is hexagonal, and the inner side of the nut 6 has two front and rear end circles of different diameters, the front end circle has threads for mounting the end of the handle, and the rear end circle passes through the cylinder at the rear end of the telescopic rod 5 but cannot pass through the front end hexagonal prism.

[0055] In the preferred embodiment of the telescopic F wrench, the breaker fixing sleeve 8 comprises a straight pipe section with threads on the inner wall, and the telescopic rod 5 is screwed in or out of the breaker fixing sleeve 8 through the straight pipe section.

[0056] In the preferred embodiment of the telescopic F wrench, the tail side of the straight pipe section is provided with a prism groove.

[0057] In the preferred embodiment of the telescopic F wrench, the tail of the breaker blade 7 is provided with a prism embedded in the prism groove.

[0058] In the preferred embodiment of the telescopic F wrench, the telescopic rod 5 is screwed in or out of the breaker fixing sleeve 8.

[0059] In one embodiment, the telescopic F wrench comprises a fixed jaw 1, a movable jaw 2, a worm 3, a worm bolt 4, a telescopic rod 5, a nut 6, a breaker blade 7, a breaker fixing sleeve 8, and a fixing bolt 9. The movable jaw 2 is sleeved on the handle of the fixed jaw 1, the inner contour of the movable jaw 2 and the outer contour of the handle part of the fixed jaw 1 are both hexagonal, and the inner contour of the movable jaw 2 is larger than the outer contour of the handle of the fixed jaw 1, so that the movable jaw 2 can slide relative to the handle of the fixed jaw 1 to adjust the distance between the fixed jaw 1 and the movable jaw 2, but due to the hexagonal contour, the two cannot rotate relative to each other. The fixed jaw 1 and the movable jaw 2 are provided with pipe wrench teeth, which can be used to clamp pipes, nuts, bolts, etc., or can be adjusted to a suitable opening size to be used as an F wrench to open and close valves. The movable jaw 2 is provided with a bolt hole, the worm bolt 4 is fixed to the movable jaw 2 through the bolt hole, the worm 3 is provided with a bolt hole at the center, the worm bolt 4 passes through the bolt hole of the worm, and the worm bolt 4 cooperates the worm 3 with the movable jaw 2. The handle of the fixed jaw 1 is provided with a rack, the worm 3 rotates along the rack to drive the movable jaw 2 to move along the handle of the fixed jaw 1. During assembly, first, the worm 3 is placed in the worm groove of the movable jaw 2, then the worm bolt passes through the bolt holes of the movable jaw 2 and the worm 3, and the bolt is tightened; then the movable jaw 2 is sleeved on the handle of the fixed jaw 1, the worm 3 is matched with the rack of the handle of the fixed jaw 1, and the worm 3 is rotated to drive the movable jaw 2 to move.

[0060] The handle of the fixed jaw 1 is a hollow hexagonal prism, the front end of the telescopic rod 5 is a hexagonal prism, and the rear end is a cylinder. The hexagonal profile and the cylindrical profile of the telescopic rod 5 are slightly smaller than the hollow hexagonal profile of the handle of the fixed jaw 1, so that the telescopic rod can slide relatively in the handle of the fixed jaw 1, but cannot rotate relatively due to the hexagonal profile. The diameter of the cylinder at the rear end of the telescopic rod 5 is slightly smaller than the diameter of the inscribed circle of the hexagonal prism at the front end. The end of the handle of the fixed jaw 1 is circular and has threads, and a nut 6 can be installed. The outer side of the nut 6 is circular at the front end and hexagonal at the rear end, facilitating installation or removal. The inner side of the nut 6 is two circles with different diameters. The larger circle at the front end has threads and can be installed at the end of the handle of the fixed jaw 1. The smaller circle at the rear end can allow the cylindrical part at the rear end of the telescopic rod 5 to pass through, but the hexagonal profile at the front end of the telescopic rod 5 is larger than the small circle at the rear end of the inner side of the nut 6, so the hexagonal profile at the front end of the telescopic rod 5 cannot pass through, thereby ensuring that the telescopic rod 5 cannot fall out of the handle of the fixed jaw 1. There is a bolt hole at the end of the handle of the fixed jaw 1, which can be used to install the fixed bolt 9. When the telescopic rod 5 is slid to the appropriate position in the handle of the fixed jaw 1, the fixed bolt 9 can be tightened to resist the telescopic rod, so that the telescopic rod 5 no longer slides. When assembling, first put the hexagonal profile at the front end of the telescopic rod 5 completely into the handle of the fixed jaw 1, and the cylindrical part at the rear end is exposed. Put the nut 6 through the cylindrical part. The large circle at the inner side of the nut 6 is screwed with the threads at the end of the handle of the fixed jaw 1, and the nut 6 is tightened. Then install the fixed bolt 9 into the bolt hole at the end of the handle of the fixed jaw 1. When using, loosen the fixed bolt 9, move the telescopic rod 5 forward and backward to the appropriate force position, and then tighten the fixed bolt 9.

[0061] The inner wall of the straight pipe section of the breaker fixing sleeve 8 has threads, and the threads on the outer side of the cylindrical part at the rear end of the telescopic rod 5 can cooperate with them, so that the telescopic rod 5 can be screwed in or out of the breaker fixing sleeve 8. As Figure 7As shown, the tail of the breaker head 7 is provided with a prism which can be embedded into the prism-shaped slot in the inside of the breaker fixing sleeve 8, so that the breaker head 7 and the breaker fixing sleeve 8 can only slide relative to each other and cannot rotate. The prism-shaped slot in the inside of the breaker fixing sleeve 8 only exists at the tail of the straight pipe section and there is no prism-shaped slot at the side of the circular ring, so as to prevent the tip of the breaker head 7 from colliding with the inner wall of the side of the circular ring of the breaker fixing sleeve 8. The telescopic rod 5 is screwed into or out of the inside of the breaker fixing sleeve 8, so as to push the breaker head 7 forward or make it retreat. During assembly, the breaker head 7 is first assembled into the prism-shaped slot in the inside of the breaker fixing sleeve 8 with the tip facing the side of the circular ring of the fixing sleeve, and then the telescopic rod 5 is connected with the straight pipe section of the breaker fixing sleeve 8 by screwing. During use, the fixed jaw 1 is held and rotated, so as to drive the telescopic rod 5 to rotate and make the telescopic rod retreat in the inside of the breaker fixing sleeve 8. When the tip of the breaker head 7 and the side of the circular ring of the fixing sleeve can accommodate the rusted nut, the fixed jaw 1 is reversely rotated to drive the telescopic rod 5 to rotate and push the breaker head 7 to extrude the rusted nut together with the breaker fixing sleeve 8, and finally the nut is broken.

[0062] Finally, it should be noted that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0063] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without deviating from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A retractable F-wrench, characterized in that, It includes, A fixed jaw includes a hollow handle and a pipe wrench portion extending vertically from the top of the handle, wherein the handle is provided with a rack on the side near the fixed jaw. The movable jaw is fitted onto the handle and slides relative to the handle to adjust the distance between the fixed jaw and the movable jaw. The movable jaw is provided with a first bolt hole and a worm groove. A worm gear is housed in the worm groove and meshes with the rack. The worm gear has a second bolt hole at its center. The worm gear rotates along the rack to drive the movable jaws to move along the handle of the fixed jaws. A worm bolt passes through the first bolt hole and the second bolt hole to assemble the worm into the movable jaw; A telescopic rod, which is telescopically inserted into the handle; A fixing bolt is laterally positioned at the end of the handle to limit the telescopic rod; The cutting head of the splitter is slidably inserted into the end of the telescopic rod opposite to the handle. A fixing sleeve for the de-cracking device is fitted onto the cutter head of the de-cracking device.

2. The retractable F-wrench according to claim 1, characterized in that, Both the fixed jaw and the movable jaw have pipe wrench teeth on their inner sides.

3. The retractable F-wrench according to claim 1, characterized in that, The handle is a hollow hexagonal prism, the front end of the telescopic rod is a hexagonal prism into which the hollow hexagonal prism can be inserted, and the rear end is a cylinder. The outlines of the hexagonal prism and the cylinder of the telescopic rod are smaller than the outline of the hollow hexagonal prism.

4. A retractable F-wrench according to claim 3, characterized in that, The diameter of the cylinder is smaller than the diameter of the inscribed circle of the hexagonal prism at its front end.

5. A retractable F-wrench according to claim 3, characterized in that, The end of the handle is round and has threads for mounting nuts.

6. A retractable F-wrench according to claim 5, characterized in that, The outer front end of the nut is round, and the rear end is hexagonal. The inner side of the nut has two front and rear circles with different diameters. The front circle has a thread for installing the end of the handle, and the rear circle passes through the cylinder at the rear end of the telescopic rod but cannot pass through the front hexagonal prism.

7. A retractable F-wrench according to claim 1, characterized in that, The breaker fixing sleeve includes a straight pipe section with threads on the inner wall, and the telescopic rod is screwed in or out of the breaker fixing sleeve through the straight pipe section.

8. A retractable F-wrench according to claim 7, characterized in that, The straight pipe section has a prism groove at its tail end.

9. A retractable F-wrench according to claim 8, characterized in that, The cutter head has a prism embedded in the prism groove at its tail.

10. A retractable F-wrench according to claim 1, characterized in that, The telescopic rod is screwed in or out along the thread inside the fixing sleeve of the breaker.

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