A center swing locking hydraulic cylinder
A technology of hydraulic cylinder and yaw, applied in the direction of fluid pressure actuating device, etc., can solve the problems of different axis between piston rod and cylinder assembly, lack of monitoring oil cylinder, hydraulic cylinder and main engine connection parts easily damaged, etc. The internal structure is compact and reliable, the service life is long, and the connection is stable.
Active Publication Date: 2018-07-13
HUBEI JIANGSHAN HEAVY IND
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Problems solved by technology
[0002] At present, when the motor grader is working, the central bulldozing blade is deflected to different angles, and the central deflection of the rod head of the hydraulic cylinder is used to lock the positioning of the central bulldozer blade at different angles. The known center deflection of the rod head locks the positioning of the hydraulic cylinder. The cone and the piston rod are integrated, and the center of the positioning cone cannot be deflected. During use, the piston rod and the cylinder assembly are likely to be misaligned, and there is no device for monitoring the extension of the oil cylinder. The connection between the hydraulic cylinder and the main engine is easily damaged.
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[0022] figure 1 , 2 Among them, the upper end of the positioning cone 4 is provided with a tapered surface 7 and an outer circular surface 8 that cooperate with the positioning hole of the main engine, and the taper of the tapered surface 7 is ⊿1:5. The other end of the positioning cone 4 is provided with a thread A9, a spherical surface 10, and an outer circular surface A11 cooperating with the piston rod assembly 3 . The inner hole at one end of the piston rod assembly 3 is provided with a thread B12 matching with the positioning cone and an empty knife groove 13; there is an upper groove 15 for installing a stainless steel wire 14 on the cylinder body 1, which is convenient for installing a groove 16 for the stainless steel wire; the guide sleeve 2 There is a lower groove 17 for installing the stainless steel wire 14, and the upper groove 15 and the lower groove 17 are combined into a complete installation hole for installing the stainless steel wire 14. Guide sleeve 2 is...
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A center yaw locking hydraulic cylinder, comprising a cylinder body, a piston rod assembly, and a positioning cone, the piston rod assembly is assembled with the cylinder body through a guide sleeve, the end of the piston rod assembly is connected to the positioning cone; the end of the piston rod assembly There are threaded holes and empty sipes; the empty sipes are connected to the inner end surface of the threaded hole; the positioning cone includes a cone body and a cone head; the cone head is a stepped cylinder, including a large step portion, a transition portion, The small step part with thread, the small step part with thread extends into the empty sipe through the threaded hole, the end surface of the small step part is a spherical surface in contact with the bottom of the empty sipe, the transition part between the small step part and the empty sipe It is a clearance fit with the threaded hole. Compared with the prior art, the present invention can not only realize the center deflection locking function, but also keep the piston rod assembly coaxial with the cylinder body during the deflection process, and has high reliability in use.
Description
technical field [0001] The invention relates to a center deflection locking hydraulic cylinder. Background technique [0002] At present, when the motor grader is working, the central bulldozing blade is deflected to different angles, and the central deflection of the hydraulic cylinder rod head is locked to meet the positioning of the central bulldozer blade at different angles. The known hydraulic cylinder positioning is locked by the rod head center deflection. The cone and the piston rod are integrated, and the center of the positioning cone cannot be deflected. During use, the piston rod and the cylinder assembly are easily misaligned, and there is no device for monitoring the extension of the oil cylinder. The connection between the hydraulic cylinder and the main engine is easily damaged. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a center yaw locking hydraulic...
Claims
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IPC IPC(8): F15B15/26F15B15/20
Inventor 姚泽功魏猛郝建平杨万虎石文浩张娜牛圆圆
Owner HUBEI JIANGSHAN HEAVY IND