Piston extraction tool
A technology for pistons and tools, applied in the field of engine piston extraction, can solve the problems of piston ring change, high labor intensity, large amount of blow-by gas, etc., and achieve the effects of ensuring cleanliness, simple and lightweight structure, and strong practicability.
Inactive Publication Date: 2019-04-05
WEICHAI POWER CO LTD
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Problems solved by technology
During the process of transferring the piston and preparing for installation, tools and hands will inevitably touch the piston ring, which not only changes the original angle, but also easily deforms the piston ring. If the piston ring is found to be deformed, it needs to be adjusted repeatedly, or the piston ring must be replaced ; If the change of the opening angle of the piston ring is not detected in time, it is very likely to cause machine failure, such as a large amount of blow-by gas
[0004] In addition, during the process of taking out the piston, the labor intensity is high, and it is very easy to cause hand bumps or bruises, resulting in unnecessary personal injury
Method used
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[0037] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0038] Figure 1 to Figure 4 A schematic structural view of a piston extracting tool provided according to an embodiment of the present invention is shown. During extraction, the piston extraction tool 10 is fitted in the groove of the top combustion chamber of the piston 20, and the outer wall of the piston extraction tool 10 is in contact with the inner wall 201 of the groove. The piston extracting tool 10 includes a handle 1, a...
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The invention provides a piston extraction tool. The piston extraction tool comprises a handle, a connecting rod and an extraction assembly, wherein the connecting rod is integrally connected with thehandle, the extraction assembly can be connected with the connecting rod, the extraction assembly comprises a lifting block and a pressing block which are coaxially arranged from inside to outside, the lifting block can be installed in an inner cavity of the pressing block, the lifting block can be fixedly connected with the connecting rod, the outer side wall of the lifting block is provided with an inclined first surface, a second surface cooperating with the first surface is arranged in the inner cavity, the outer wall surface of the pressing block can be placed in a groove at the top of the piston, the lifting block fixedly connected with the connecting rod can be driven to move upwards by rotating the handle, so that the first surface and the second surface are in contact fit to enable the pressing block to radially expand and abut against the groove to fix the piston, and then the piston is extracted. According to the piston extraction tool, the two conical surfaces cooperate with each other, and the axial force is changed into the radial force which is pressed to the inner wall of a combustion chamber of the piston so that the piston can be taken out more conveniently, andthe disassembling and assembling efficiency of the piston is improved; and moreover, the piston is firmly fixed during extraction.
Description
technical field [0001] The invention relates to the technical field of engine piston extraction, in particular to a piston extraction tool. Background technique [0002] The existing engine pistons are difficult to disassemble and take out during maintenance or replacement. During the take-out process, due to the heavy weight of the piston itself, the piston and the cylinder liner are closely bonded, and there is no need to manually carry the piston connecting rod parts Stable force application point, once the connecting rod end of the piston is stressed, the piston is easy to come out of the cylinder liner suddenly, causing the piston to bump or fall to the ground. [0003] Secondly, in the process of taking out, it is easy to change the mutual angles of the notches of the piston rings when moving the piston-connecting rod assembly. The piston ring is used to seal the gap between the piston and the cylinder liner. Because the piston ring has a gap, in order to minimize the...
Claims
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Login to View More IPC IPC(8): B25B27/02
CPCB25B27/02
Inventor 白克勤谭磊陈爱国李成东崔佩羽姚学庆闫玉
Owner WEICHAI POWER CO LTD