Shovel plate lifting hydraulic control integrated valve block and continuous coal cutter
An integrated valve block and hydraulic technology, applied in the direction of earthwork drilling, slitting machinery, mechanical equipment, etc., can solve problems such as rapid fall of the shovel, damage of the shovel, and mental tension of the locomotive, so as to prevent rapid falling and start-up smooth effect
An integrated valve block and hydraulic technology, applied in the direction of earthwork drilling, slitting machinery, mechanical equipment, etc., can solve problems such as rapid fall of the shovel, damage of the shovel, and mental tension of the locomotive, so as to prevent rapid falling and start-up smooth effect
CN109798271APending Publication Date: 2019-05-24江苏佳煤机械有限公司
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[0033] The embodiment of the present application provides a scraper lift hydraulic control integrated valve block, which is small in size and easy to integrate and install. The backup pressure of the oil circuit before the blade is lifted, the locking of the lifting height after the blade is lifted in place, and the backup pressure buffer of the hydraulic circuit when the blade falls back prevent the blade from being damaged due to excessive falling speed.
[0034] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application ...
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The invention discloses a shovel plate lifting hydraulic control integrated valve block. The shovel plate lifting hydraulic control integrated valve block comprises a valve body, the valve body is internally provided with an interconnected first oil channel and second oil channel, the two ends of the first oil channel respectively form a port A and a port C1 on the valve body, the two ends of thesecond oil channel form a port P and a port T respectively on the valve body, the first oil channel communicates with a sequential valve, an oil inlet of the sequential valve communicates with the port A, and an oil outlet of the sequential valve communicates with the port C1, the communication position of the first oil channel and the second oil channel is located between the sequential valve andthe port C1, the second oil channel successively communicates with a pressure reducing valve, a one-direction valve and an adjustable throttle valve from the port P to the port T, the oil inlet of the pressure reducing valve communicates with the port P and the oil outlet of the pressure educing valve communicates with the oil inlet of one-direction valve, the oil outlet of the one-direction valve communicates with the adjustable throttle valve, and the communication position of the first oil channel and the second oil channel is located between the one-direction valve and the adjustable throttle valve.
Description
technical field [0001] The invention relates to a continuous coal mining machine, in particular to a shovel plate hydraulic control integrated valve block of the continuous coal mining machine. Background technique [0002] At present, in the field of hydraulic drive and control technology, people have focused their attention on: aiming at integration, high efficiency and high cost performance, creating and possessing competitive products as a new development strategy. [0003] Usually, when controlling the lifting height of the shovel in the continuous miner, a typical and common hydraulic cylinder such as a single-rod double-acting cylinder is used for control, but when the double-acting cylinder is used to control the lifting of the shovel, the shovel of the continuous miner is required The height of the plate can be safely locked to receive goods. The locomotive workers need to pay attention to the height of the shovel plate at all times, and constantly adjust it accordi...
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Patent Timeline
24 May 2019
Publication
CN109798271A
- IPC
- F15B11/04; F15B13/01; F15B13/02; E21C31/02
- Inventors
- 王春江; 程聪