A assembly and disassembly tools for large-scale marine diesel piston ring
阅读说明:本技术 一种用于大型船用柴油机活塞环的拆装工具 (A assembly and disassembly tools for large-scale marine diesel piston ring ) 是由 马龙斌 朱正金 罗茂林 方圣琦 董强 于 2019-10-21 设计创作,主要内容包括:一种用于大型船用柴油机活塞环的拆装工具,包括手持部件、固定结构部件和运动结构部件;所述手持部件固定连接于所述固定结构部件的中部,所述运动结构部件连接于所述固定结构部件上,并且能够沿该固定结构部件进行左右的向外或向内运动,从而将所述活塞环撑开,完成该活塞环的拆装。本发明能够满足不用尺寸的活塞环的拆装,不会对活塞环、活塞等造成损坏,具有传动平稳、安全性高、性能可靠的优点,达到了方便管理、通用性强、便于操作、降低成本的效果。(A disassembly and assembly tool for a large marine diesel engine piston ring comprises a handheld part, a fixed structure part and a moving structure part; the hand-held part is fixedly connected to the middle part of the fixed structural part, and the moving structural part is connected to the fixed structural part and can move outwards or inwards leftwards and rightwards along the fixed structural part, so that the piston ring is expanded, and the piston ring is assembled and disassembled. The invention can meet the dismounting of piston rings without dimension, can not damage the piston rings, the pistons and the like, has the advantages of stable transmission, high safety and reliable performance, and achieves the effects of convenient management, strong universality, convenient operation and cost reduction.)
1. The utility model provides a assembly and disassembly tools for large-scale marine diesel piston ring which characterized in that: the disassembling tool comprises a handheld part, a fixed structural part and a moving structural part; the hand-held part is fixedly connected to the middle part of the fixed structural part, and the moving structural part is connected to the fixed structural part and can move outwards or inwards leftwards and rightwards along the fixed structural part, so that the piston ring is expanded, and the piston ring is assembled and disassembled.
2. The dismounting tool for a large marine diesel piston ring according to claim 1, characterized in that: the fixed structure part comprises a sliding rod and two end plates; the upper portion and the lower portion of the end plate are respectively provided with an upper connecting hole and a lower connecting hole, the two end plates are arranged in a bilateral symmetry mode, two ends of the sliding rod respectively penetrate into the lower connecting holes of the two end plates, and the sliding rod is fixedly connected between the two end blocks through the hexagon socket head cap screws.
3. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 2, characterized in that: the hand-held component comprises a handle ball, a handle and a handle end clamping block; the upper end and the lower end of the handle are respectively connected and fixed with the handle end clamping block and the handle ball through threads, the center of the handle end clamping block is provided with a center hole, the upper side of the center hole is provided with a clamping groove which is communicated with the center hole and the upper side edge of the handle end clamping block, the handle end clamping block is also provided with a locking threaded hole which transversely penetrates through the clamping groove, the sliding rod penetrates through the center hole, a screw is screwed into the locking threaded hole to lock the end handle clamping block in the middle of the sliding rod, and therefore the handheld part is fixed on the fixed structural part.
4. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 2, characterized in that: the motion structure component comprises a screw, a left claw hook component and a right claw hook component; the two ends of the screw are axially supported in the upper connecting holes of the two end plates through rolling bearings and are parallel to the sliding rod, the left half section and the right half section of the periphery of the screw are respectively provided with left-handed threads and right-handed threads, the left claw hook assembly and the right claw hook assembly are respectively connected with the left-handed threads and the right-handed threads of the screw and are guided by the sliding rod to do left-right opposite or opposite linear motion, the left claw hook assembly and the right claw hook assembly hook the two ends of the piston ring, and the rotating screw drives the left claw hook assembly and the right claw hook assembly to move in opposite directions towards the two sides so as to prop the piston ring open.
5. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 4, characterized in that: the outer end of the screw rod is provided with an annular groove, a clamping ring is embedded into the annular groove to fix the relative position of the screw rod and the end plate in the axial direction, and the right end part of the screw rod is a wrench head part.
6. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 4, characterized in that: the right claw hook component comprises a sliding block, a claw hook seat, a long claw hook, a bushing and a right-handed nut; the slider is provided with an upper through hole and a lower through hole which are parallel to each other in axis, the internal thread of the right-handed nut is a right-handed thread and is fixed in the upper through hole, the right-handed nut is connected to the right half section of the screw rod through the right-handed thread, and the bushing is arranged in the lower through hole and is sleeved on the sliding rod; the claw hook seat is connected to the upper part of the sliding block through a bolt and a nut and can rotate around the bolt; the upper part of the claw hook seat is provided with an open slot embedded into the piston ring, two side walls of the open slot are respectively provided with a threaded through hole, and a locking bolt used for clamping and fixing the piston ring is screwed in the threaded through hole; the long claw hook is a right-angle component and is fixed on the claw hook seat through a fastening bolt.
7. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 6, characterized in that: the lower part of the long claw hook is provided with a square boss, the upper part of the claw hook seat is provided with a square groove, and the square boss is embedded into the square groove to position the long claw hook.
8. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 6, characterized in that: the left claw hook component is connected with the left thread of the screw rod and sleeved on the sliding rod, and the position and the direction of the left claw hook component are opposite to those of the right claw hook component; the left claw hook component has the same structure as the right claw hook component except that a left-handed nut is used for replacing the right-handed nut and a short claw hook is used for replacing the long claw hook, and the left claw hook component comprises a sliding block, a claw hook seat, a short claw hook, a bushing and a left-handed nut.
9. The disassembly and assembly tool for a piston ring of a large marine diesel engine according to claim 8, characterized in that: the lower through hole of the sliding block is in interference fit with the bushing, and the upper through hole of the sliding block is in interference fit with the left-handed nut and the right-handed nut respectively.
Technical Field
The invention relates to auxiliary process equipment for parts of a large marine diesel engine, in particular to a disassembling tool for a piston ring of the large marine diesel engine, and belongs to the technical field of manufacturing of marine diesel engines.
Background
The structure of the diesel engine can not be separated from a piston ring in both a large marine low-speed diesel engine and a small agricultural diesel engine. The piston ring is installed in the annular of piston, constitutes the combustion chamber jointly with piston, cylinder jacket and cylinder cap, and its main function avoids direct contact wearing and tearing between piston and the cylinder jacket, reduces the gas leakage to give the cylinder jacket with the heat transfer of piston head portion.
The piston ring is an unclosed metal ring with certain elasticity, and 3-4 piston rings are generally arranged on each piston of a large-scale low-speed diesel engine. The working environment of the piston ring is very severe and is easy to corrode at high temperature, and the piston ring belongs to a vulnerable part, so that the piston ring needs to be detached, checked or replaced at regular intervals. However, when the piston ring of the large-sized low-speed diesel engine is disassembled and assembled, manual forced disassembly and assembly or a special disassembling tool is generally adopted at present, and the two modes are inconvenient, unsafe or strong in specificity in disassembly and assembly; the piston rings with different sizes are assembled and disassembled by using special tools, so that the use and management are inconvenient, and some piston rings and pistons are even damaged.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the disassembling tool for the piston ring of the large marine diesel engine, and the same disassembling tool can be used for piston rings with different cylinder diameters, so that the effects of convenient management, strong universality, convenient operation and cost reduction are achieved.
Based on the above purpose, the technical scheme provided by the invention is as follows:
a disassembly and assembly tool for a large marine diesel engine piston ring comprises a handheld part, a fixed structure part and a moving structure part; the hand-held part is fixedly connected to the middle part of the fixed structural part, and the moving structural part is connected to the fixed structural part and can move outwards or inwards leftwards and rightwards along the fixed structural part, so that the piston ring is expanded, and the piston ring is assembled and disassembled.
As a further improvement, the fixed structural component comprises a sliding rod and two end plates; the upper portion and the lower portion of the end plate are respectively provided with an upper connecting hole and a lower connecting hole, the two end plates are arranged in a bilateral symmetry mode, two ends of the sliding rod respectively penetrate into the lower connecting holes of the two end plates, and the sliding rod is fixedly connected between the two end blocks through the hexagon socket head cap screws.
As a further improvement, the hand-held component comprises a handle ball, a handle and a handle end clamping block; the upper end and the lower end of the handle are respectively connected and fixed with the handle end clamping block and the handle ball through threads, the center of the handle end clamping block is provided with a center hole, the upper side of the center hole is provided with a clamping groove which is communicated with the center hole and the upper side edge of the handle end clamping block, the handle end clamping block is also provided with a locking threaded hole which transversely penetrates through the clamping groove, the sliding rod penetrates through the center hole, a screw is screwed into the locking threaded hole to lock the end handle clamping block in the middle of the sliding rod, and therefore the handheld part is fixed on the fixed structural part.
As a further improvement, the motion structure component comprises a screw rod, a left claw hook component and a right claw hook component; the two ends of the screw are axially supported in the upper connecting holes of the two end plates through rolling bearings and are parallel to the sliding rod, the left half section and the right half section of the periphery of the screw are respectively provided with left-handed threads and right-handed threads, the left claw hook assembly and the right claw hook assembly are respectively connected with the left-handed threads and the right-handed threads of the screw and are guided by the sliding rod to do left-right opposite or opposite linear motion, the left claw hook assembly and the right claw hook assembly hook the two ends of the piston ring, and the rotating screw drives the left claw hook assembly and the right claw hook assembly to move in opposite directions towards the two sides so as to prop the piston ring open.
As a further improvement, an annular groove is arranged at the outer end of the screw rod, a snap ring is embedded into the annular groove to fix the relative position of the screw rod and the end plate in the axial direction, and a spanner head is arranged at the right end of the screw rod.
As a further improvement, the right claw hook assembly comprises a slide block, a claw hook seat, a long claw hook, a bushing and a right-handed nut; the slider is provided with an upper through hole and a lower through hole which are parallel to each other in axis, the internal thread of the right-handed nut is a right-handed thread and is fixed in the upper through hole, the right-handed nut is connected to the right half section of the screw rod through the right-handed thread, and the bushing is arranged in the lower through hole and is sleeved on the sliding rod; the claw hook seat is connected to the upper part of the sliding block through a bolt and a nut and can rotate around the bolt; the upper part of the claw hook seat is provided with an open slot embedded into the piston ring, two side walls of the open slot are respectively provided with a threaded through hole, and a locking bolt used for clamping and fixing the piston ring is screwed in the threaded through hole; the long claw hook is a right-angle component and is fixed on the claw hook seat through a fastening bolt.
As a further improvement, the lower part of the long claw hook is provided with a square boss, the upper part of the claw hook seat is provided with a square groove, and the square boss is embedded into the square groove to position the long claw hook.
As a further improvement, the left claw hook component is connected with the left-hand thread of the screw rod and sleeved on the sliding rod, and the position and the direction are opposite to those of the right claw hook component; the left claw hook component has the same structure as the right claw hook component except that a left-handed nut is used for replacing the right-handed nut and a short claw hook is used for replacing the long claw hook, and the left claw hook component comprises a sliding block, a claw hook seat, a short claw hook, a bushing and a left-handed nut.
As a further improvement, the lower through hole of the sliding block is in interference fit with the bushing, and the upper through hole of the sliding block is in interference fit with the left-handed nut and the right-handed nut respectively.
Compared with the prior art, the invention achieves the following effects:
1. the invention has strong universality and can meet the dismounting and mounting of piston rings with different sizes.
2. The invention is provided with the locking bolt which can lock the piston ring, thereby ensuring that the piston ring is not flicked off in the process of disassembly and assembly, ensuring the safety of personnel and simultaneously not damaging the piston ring, the piston and the like.
3. The invention drives the sliding block and the claw hook seat to move leftwards or rightwards by rotating the screw rod, and has the advantages of stable movement and high reliability because the screw rod and the screw nut on the sliding block are in threaded transmission.
4. The claw hook seat can rotate around the bolt, and the two claw hooks are slightly longer and shorter, so that the operation of installing the piston ring is more convenient and flexible.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a structural view of the end plate.
Fig. 4 is a structural view of the slide bar.
Fig. 5 is a structural view of the shank-end clamp block.
Fig. 6 is a structural view of the handle.
Fig. 7 is a structural view of the screw.
Fig. 8 is a structural view of the slider.
Fig. 9 is a structural view of a right-hand nut.
Fig. 10 is a structural view of the claw hook holder.
Fig. 11 is a structural view of a long claw hook.
Fig. 12 is a state diagram of the use of the present invention.
In the figure:
1-end plate, 101-upper connecting hole, 102-lower connecting hole, 2-snap ring, 3-claw hook base, 31-fitting hole, 32-threaded through hole, 33-square groove, 34-fastening screw hole, 4-locking bolt, 5-long claw hook, 51-claw, 52-square boss, 53-bolt hole, 6-screw rod, 61-left-hand thread, 62-right-hand thread, 63-journal, 64-wrench head, 65-annular groove, 7-fastening bolt, 8-bushing, 9-slider, 91-upper through hole, 92-lower through hole, 93-pin hole, 94-fixing hole, 10-right-hand nut, 11-screw, 12-slide bar, 121-internal threaded hole, 13-internal hexagonal bolt, 14-nut, 15-bolt, 16-handle, 17-handle end clamp block, 171-center hole, 172-internal threaded hole, 173-clamp groove, 174-locking threaded hole, 18-handle ball, 19-rolling bearing, 20-elastic pin, 21-left-handed nut, 22-short claw hook.
Detailed Description
The present invention is further illustrated with reference to the following figures and specific examples, which are not intended to limit the scope of the invention as claimed.
The invention provides a disassembling tool for a large marine diesel engine piston ring, which mainly comprises the following three parts: a hand-held component, a fixed structural component, and a moving structural component; the hand-held part is fixedly connected with the middle part of the fixed structural part, and the moving structural part is connected with the fixed structural part and can move outwards from left to right along the fixed structural part, so that the piston ring is spread and is detached from the piston.
Referring to fig. 1 and 2, the fixed structure includes a
Referring to fig. 1 and 5 in combination, the hand-held device includes a
Referring to fig. 1, the moving structure part includes a
Referring to fig. 7, the left half section and the right half section of the outer periphery of the
Referring to fig. 1, the right claw hook assembly is connected to the right-
Referring to fig. 1, the left grappling hook assembly is connected to the left-
The left claw hook component comprises a
Referring to fig. 1 and fig. 12, the working steps of the present invention are:
firstly, rotating the
The piston ring has the advantages of simple structure, safety and convenience in use, strong universality and the like, and can be widely applied to the disassembly and assembly of the piston ring of the large marine diesel engine.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made within the scope of the present invention should be considered to be within the technical scope of the present invention.
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