Hydraulic system and crawler traveling mechanism with the hydraulic system
A hydraulic system, left-travel technology, applied in fluid pressure actuation system components, fluid pressure actuation system testing, mechanical equipment, etc., can solve the problems of asynchrony, inconsistency, and increased manufacturing and operating costs of left and right track speeds.
Active Publication Date: 2018-10-12
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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Problems solved by technology
[0008] The accumulation of the above-mentioned multiple errors will cause the flow rate of the hydraulic oil entering the left and right travel motors 921, 922 to be different, which will cause the speed of the left and right crawlers to be out of sync and inconsistent
[0009] If you want to reduce the errors in the manufacturing process of the reversing valve 93 and the pilot valve 94, you need to improve the manufacturing accuracy of the parts, or add complex control elements, which greatly increases the manufacturing cost of the hydraulic system; Operational errors, which can significantly increase human resource costs
Taken together, the manufacturing and operating costs of the walking mechanism will increase greatly
Method used
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[0027] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended invention purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0028] The object of the present invention is to provide a hydraulic system and a crawler belt traveling mechanism with the hydraulic system. The hydraulic system can simply and reliably improve the synchronization of the left and right traveling motors by adding a synchronous sequence valve between the two traveling motors, and has a simple structure. The cost is lower.
[0029] figure 2 It is a schematic structural diagram of the hydraulic system provided by the first embodiment of the present invention. Such as figure 2 As shown, the hydraulic system provided by the present invention includes a hydraulic pump 10, a travel motor and a reversing valve, the travel motor includes a left travel motor ...
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The invention relates to a hydraulic system and a crawler belt walking mechanism. The hydraulic system comprises a hydraulic pump, a walking motor and a reversing valve. The walking motor comprises a left walking motor body and a right walking motor body. The reversing valve comprises a left reversing valve body and a right reversing valve body. The hydraulic pump is connected with the left walking motor body through the left reversing valve body and is connected with the right walking motor body through the right reversing valve body. The hydraulic system further comprises a synchronous sequence valve. When the left walking motor body and the right walking motor body are both in an advancing or retreating state, a left front liquid inlet of the left walking motor body communicates with a right front liquid inlet of the right walking motor body, and a left front liquid outlet of the left walking motor body communicates with a right front liquid outlet of the right walking motor body. According to the hydraulic system, the synchronous sequence valve is additionally mounted between the two walking motor bodies, and therefore the synchronism of the left walking motor body and the right walking motor body is improved simply and reliably; and the structure is simple, and cost is low.
Description
technical field [0001] The invention relates to the field of engineering machinery, in particular to a hydraulic system and a crawler belt traveling mechanism with the hydraulic system. Background technique [0002] In the prior art, the traveling mechanism of the mobile construction machinery is mostly a crawler-type traveling mechanism, and the crawler-type traveling mechanism is usually driven by a hydraulic system. figure 1 Shown is a schematic structural diagram of a hydraulic system in the prior art. Such as figure 1 As shown, the hydraulic system includes a hydraulic pump 91 , a travel motor 92 , a reversing valve 93 and a pilot valve 94 . The travel motor 92 includes a left travel motor 921 that controls the left side of the crawler belt and a right travel motor 922 that controls the right side of the crawler belt; The reversing valve 932; the pilot valve 94 includes a left front pilot valve 941, a left rear pilot valve 942, a right front pilot valve 943 and a rig...
Claims
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IPC IPC(8): F15B11/22F15B21/08F15B13/07F15B19/00
CPCF15B11/22F15B13/07F15B19/00F15B21/087
Inventor 朱长林乔国华刘发民
Owner SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO