Special-shaped nut dismounting tool

Abstract

The utility model discloses a special-shaped nut dismounting tool which comprises a handle, a circular ring wrench is arranged on one side of the handle, a lifting lug is fixedly connected to the other side of the handle, a through groove is formed in the handle, ten grooves distributed at equal intervals are evenly formed in the inner side of the circular ring wrench, and the lifting lug is fixedly connected with the through groove. The outer side of the circular ring wrench is fixedly connected with a connecting block; according to the special-shaped nut disassembling tool, the circular ring spanner and the groove are arranged on the handle, the groove of the circular ring spanner can be in small clearance fit with a boss on the outer circle of the nut, the lifting lug arranged at the gravity center position can ensure that the special-shaped nut disassembling tool is kept horizontal when being hoisted, and in addition, a lever can penetrate through the through groove conveniently so as to increase disassembling force; therefore, the propeller nut is more convenient to disassemble and assemble; meanwhile, through the arrangement of a folding positioning mechanism, the device can be folded and stored conveniently, and therefore the occupied size of the device when the device is stored or carried is conveniently reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship maintenance, in particular to a tool for disassembling special-shaped nuts. Background Art

[0002] As we all know, the ship shaft system is composed of propellers, propeller shafts, stern shafts, half couplings, stern bearings and propeller bearings. In maintenance projects such as checking the status of propeller shafts and stern shafts, replacing bearings, etc., it is necessary to disassemble the shaft system components and perform maintenance in the dry dock state. There is a special-shaped nut at the end of the propeller shaft to fasten the propeller. If the propeller nut needs to be removed when disassembling the propeller, other disassembly work can be carried out. In addition, because the diameter of the propeller nut is large, the torque required is also relatively large, which brings inconvenience to the disassembly and assembly of the propeller nut. In addition, the disassembly tool in the prior art does not have the function of folding and storage, so that the use function of the disassembly tool still needs to be improved. For this reason, we propose a special-shaped nut disassembly tool.

[0003] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the prior art that is already known to one of ordinary skill in the art. Utility Model Content

[0004] The utility model aims to provide a tool for disassembling special-shaped nuts to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool for removing special-shaped nuts, comprising: a handle, a ring wrench is provided on one side of the handle, a lifting ear is fixedly connected to the other side of the handle, a through groove is provided inside the handle, and the inner side of the ring wrench is evenly provided with equidistantly distributed grooves, and the number of the grooves is ten.

[0006] By adopting the above technical solution, the ten grooves arranged in the ring wrench can correspond to the ten bosses on the outer circle of the paddle nut, so that the grooves can fit with the bosses with a small clearance and can effectively withstand the angular torque. At the same time, the lifting ears arranged at the center of gravity can facilitate the device to maintain a horizontal position when it is hoisted by a hoist. In addition, the through groove can be used to penetrate the lever, thereby increasing the disassembly force.

[0007] Preferably, a connecting block is fixedly connected to the outer side of the ring wrench, and one side of the connecting block is rotatably connected to the handle.

[0008] By adopting the above technical solution, the handle and the ring wrench can be easily folded and stored.

[0009] Preferably, it also includes a folding positioning mechanism, which includes sockets symmetrically opened on both sides of the connecting block and support plates symmetrically fixedly connected to both sides of the handle, and the support plate is internally slidably connected with an insertion rod for inserting into the socket.

[0010] By adopting the above technical solution, when the handle is rotated to the same horizontal position as the ring spanner, the handle and the connecting block can be positioned by inserting the insertion rod into the insertion hole, thereby facilitating normal use of the device.

[0011] Preferably, one end of the insertion rod away from the connecting block is fixedly connected to a bracket, and a spring is sleeved on the insertion rod, and two ends of the spring are respectively fixedly connected to the bracket and the support plate.

[0012] By adopting the above technical solution, the insertion rod can be automatically inserted into the insertion hole for positioning under the tensioning force of the spring.

[0013] Preferably, the number of the brackets is two, and one side of the two adjacent brackets is fixedly connected to a rod body, and one end of the rod body is fixedly connected to a block body.

[0014] By adopting the above technical solution, when the two blocks are squeezed, they can drive the two rods to move away from each other, so that after the brackets move away from each other, they can drive the insertion rod to be pulled out of the insertion hole, thereby facilitating the folding of the handle and the ring wrench.

[0015] Preferably, a support block is fixedly connected to one side of the handle, a threaded rod is internally threadedly connected to the support block, and a push block for extruding the block is fixedly connected to one end of the threaded rod.

[0016] By adopting the above technical solution, after the threaded rod is tightened, it can drive the push block to squeeze the two blocks at the same time, so that the handle and the ring wrench can be folded and stored more efficiently.

[0017] Preferably, one end of the threaded rod away from the push block is fixedly connected with a protrusion.

[0018] By adopting the above technical solution, it is possible to easily screw the threaded rod.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] The special-shaped nut disassembly tool is provided with a ring spanner and a groove on the handle, so that the groove of the ring spanner and the boss of the outer circle of the nut can be matched with a small gap, and the lifting lug arranged at the center of gravity can ensure that the device remains horizontal when being hoisted. In addition, the through groove is also convenient for passing the lever to increase the disassembly force, thereby making the disassembly and assembly of the propeller nut more convenient; at the same time, through the provision of the folding and positioning mechanism, it is also convenient to fold and store the device, thereby facilitating the reduction of the volume occupied by the device when being stored or carried. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the special-shaped nut disassembly tool of the utility model;

[0022] Figure 2 It is an enlarged schematic diagram of area A of the structural schematic diagram of the special-shaped nut removal tool of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a bracket and a rod body in a special-shaped nut removal tool of the utility model;

[0024] Figure 4 It is an enlarged schematic diagram of area B of the schematic diagram of the bracket and the rod body structure in the special-shaped nut removal tool of the utility model.

[0025] In the figure: 1, handle; 10, through slot; 11, lifting ear; 12, ring spanner; 13, groove; 14, connecting block; 2, folding positioning mechanism; 20, socket; 21, support plate; 22, plug rod; 23, spring; 24, bracket; 25, rod body; 26, block body; 27, push block; 28, threaded rod; 29, support block; 201, protrusion. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 4 , the utility model provides a technical solution: a tool for disassembling special-shaped nuts, comprising: a handle 1 and a folding positioning mechanism 2;

[0028] Firstly, in order for the ten grooves 13 arranged in the circular wrench 12 to correspond to the ten bosses on the outer circle of the paddle nut, so that the grooves 13 can cooperate with the bosses with a small clearance and can effectively withstand the torque of the angle, and at the same time, the lifting ear 11 arranged at the center of gravity can facilitate the device to maintain a horizontal position when it is hoisted by the hoist, and the through groove 10 can be used to penetrate the lever, thereby increasing the disassembly force; a circular wrench 12 is arranged on one side of the handle 1, and the lifting ear 11 is fixedly connected to the other side of the handle 1, and the handle 1 is provided with a through groove 10, and the inner side of the circular wrench 12 is evenly provided with equidistantly distributed grooves 13, and the number of the grooves 13 is ten;

[0029] Secondly, in order to facilitate the folding and storage of the handle 1 and the ring spanner 12, a connecting block 14 is fixedly connected to the outer side of the ring spanner 12, and one side of the connecting block 14 is rotatably connected to the handle 1; in order to position the handle 1 and the connecting block 14 by inserting the insertion rod 22 into the insertion hole 20 when the handle 1 is rotated to the same horizontal position as the ring spanner 12, thereby facilitating the normal use of the device, the folding and positioning mechanism 2 includes insertion holes 20 symmetrically arranged on both sides of the connecting block 14 and support plates 21 symmetrically fixedly connected to both sides of the handle 1, and the interior of the support plate 21 is slidably connected with an insertion rod 22 for inserting into the insertion hole 20; in order to facilitate the automatic insertion of the insertion rod 22 into the insertion hole 20 for positioning under the tensioning force of the spring 23, a bracket 24 is fixedly connected to the end of the insertion rod 22 away from the connecting block 14, and a spring 23 is mounted on the insertion rod 22, and the two ends of the spring 23 are respectively connected to the bracket 24 It is fixedly connected to the support plate 21; in order to drive the two rod bodies 25 away from each other when the two blocks 26 are squeezed, so that the brackets 24 can drive the insertion rod 22 to be pulled out of the insertion hole 20 after they are away from each other, thereby facilitating the folding of the handle 1 and the ring wrench 12, there are two brackets 24, and the adjacent sides of the two brackets 24 are fixedly connected with the rod bodies 25, and one end of the rod bodies 25 is fixedly connected with the block body 26; in order to enable the threaded rod 28 to drive the push block 27 to squeeze the two blocks 26 at the same time after tightening, so as to facilitate the folding and storage of the handle 1 and the ring wrench 12 more efficiently, one side of the handle 1 is fixedly connected with a support block 29, the internal thread of the support block 29 is connected with a threaded rod 28, and one end of the threaded rod 28 is fixedly connected with a push block 27 for squeezing the block body 26; in order to facilitate the twisting of the threaded rod 28, the end of the threaded rod 28 away from the push block 27 is fixedly connected with a protrusion 201.

[0030] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when in use, the ten grooves 13 arranged in the ring wrench 12 can correspond to the ten bosses on the outer circle of the paddle nut, so that the grooves 13 can cooperate with the bosses with a small gap and can effectively withstand the angular torque. At the same time, the lifting ear 11 arranged at the center of gravity can facilitate the device to maintain a horizontal position when it is hoisted by a hoist. In addition, the through groove 10 can be used to penetrate the lever, thereby increasing the disassembly force; when it is necessary to fold and store the device, the push block 27 can be driven by tightening the threaded rod 28 to squeeze the two blocks 26 at the same time, so that the block 26 can drive the two brackets 24 to move away from each other through the rod body 25, and then the insertion rod 22 can be pulled out of the slot, so that the connecting block 14 and the handle 1 that have lost the positioning force can be folded and stored.

[0031] In summary: the special-shaped nut removal tool is provided with a ring wrench 12 and a groove 13 on the handle 1, so that the groove 13 of the ring wrench 12 and the boss of the outer circle of the nut can be matched with a small gap, and the ear 11 arranged at the center of gravity can ensure that the device remains horizontal when being hoisted. In addition, the through groove 10 is also convenient for passing the lever to increase the disassembly force, thereby making the disassembly and assembly of the propeller nut more convenient; at the same time, through the provision of the folding and positioning mechanism 2, it is also convenient to fold and store the device, thereby facilitating the reduction of the volume occupied by the device when it is stored or carried.

[0032] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tool for removing special-shaped nuts, characterized in that: include: A handle (1), wherein a circular wrench (12) is arranged on one side of the handle (1), and a lifting ear (11) is fixedly connected to the other side of the handle (1), a through groove (10) is provided inside the handle (1), and grooves (13) are evenly distributed at equal intervals on the inner side of the circular wrench (12), and the number of the grooves (13) is ten.

2. A tool for removing special-shaped nuts according to claim 1, characterized in that: A connecting block (14) is fixedly connected to the outer side of the circular ring wrench (12), and one side of the connecting block (14) is rotatably connected to the handle (1).

3. The tool for removing special-shaped nuts according to claim 1, characterized in that: The invention also comprises a folding positioning mechanism (2), wherein the folding positioning mechanism (2) comprises insertion holes (20) symmetrically arranged on both sides of the connection block (14) and support plates (21) symmetrically fixedly connected to both sides of the handle (1), wherein an insertion rod (22) for inserting into the insertion hole (20) is slidably connected inside the support plate (21).

4. A tool for removing special-shaped nuts according to claim 3, characterized in that: One end of the insertion rod (22) away from the connection block (14) is fixedly connected to a bracket (24), a spring (23) is sleeved on the insertion rod (22), and two ends of the spring (23) are respectively fixedly connected to the bracket (24) and the support plate (21).

5. The tool for removing special-shaped nuts according to claim 4, characterized in that: The number of the brackets (24) is two, and one side of the two adjacent brackets (24) is fixedly connected to a rod body (25), and one end of the rod body (25) is fixedly connected to a block body (26).

6. The tool for removing special-shaped nuts according to claim 1, characterized in that: A support block (29) is fixedly connected to one side of the handle (1), a threaded rod (28) is internally threadedly connected to the support block (29), and a push block (27) for squeezing the block body (26) is fixedly connected to one end of the threaded rod (28).

7. A tool for removing special-shaped nuts according to claim 6, characterized in that: One end of the threaded rod (28) away from the push block (27) is fixedly connected with a protrusion (201).

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