Intermediate tonnage of various dump truck for the

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Intermediate tonnage of various dump truck for the \

Box lifting or falling. When the cab of the valve handle in the \\Then the valve spring force to keep the gap under the natural (initial) position as shown in Figure l, P port connected to the oil pump, O port access fuel tank, A tank cavity then lifting the inlet, B cavity then drop into the port tank, O, O: O O port cavity that pass through the fuel tank. The valve has four working gear, you can complete four different actions: (1) Lift the handle of the cab to liters of gas http \compression ring against the spring block, the oil pump to oil into the P port, and one-way wide open into the A chamber. territory to lift the fuel tank into the oil El, extended fuel tanks, fuel tank trunk lift the cavity (or between the cylinder wall) of the oil retention chamber by the B, O cavity flow back into the tank when the vehicle is overloaded, the system pressure suddenly increased, the safety valve is opened, high 5, 1996 at oil pressure by P, O cavity back into the tank, pump unloading carriages do not lift, that play a limited role overload. (2) stop me in the lifting process, it is in a position to stop, it will be in the \relaxation of the valve handle, then slip stuffy in the spring under the effect of positioning the left back position. which is equivalent to the position shown in Figure 2. At this point the oil pressure pump to transfer into the opening by the P distribution valve, O into the cavity, then flow back into the tank through O ports, pumps idle, unloading,[link widoczny dla zalogowanych], slide valve will be A, B and two cavities were closed carriages stopped at a position. (3) decreased. the driver will go down valve handle position slide valve in the cylinder under the action of the left, and to P port, B cavity connected, PEl cavity barrier with A, A cavity,[link widoczny dla zalogowanych], OEl interlinked, B cavity, OEl not work. the slide valve slider along the left while the left so that the slider guide groove ball falls right, position the spring is compressed, then block side, the spring d done and push ring pressed street block in the file. At this point the oil pressure pump to transfer into the opening by P B chamber pressure from the B to the cylinder chamber and then dropped into the oil El,[link widoczny dla zalogowanych], in the liquid under pressure last stage cylinder forced landing,[link widoczny dla zalogowanych], forced down in the trunk along with falls in the oil tank by the A chamber, Ot cavity, OEl flow back tank. (4) float. in the last stage after the forced landing cylinder (trunk lifting angle 30. or so) will be dropped from the position of the handle wide gas to relax. sliding wide in the right orientation under the action of the spring, resulting in ball against the official pay guide groove of the left block, shown in Figure 3. At this point P population, A cavity, B chamber, O port are connected, pump unloading, tank float slowly by gravity trunk reset. completion of the rise in the distribution of valves, stop, drop and automatically reset the four movements, the \15mm operating temperature of a series of 40 ~ +6 O ℃ way: screw connection (M27X2, M22X1.5) · 9 · JU love P. ÷. from 3, lifting the valve in the distribution of \2. On base Yam 3. forget the bit body 4. slide valves 5. Debate body (this bighead Series Yu Gulf) the amount of love received oath date; 1996-03_3O (on page 7), etc., not to mention testing lines important large-scale integrated devices, the product quality depends on a few skilled workers to master and can not guarantee that this issue should attach great importance to business leaders. According to the 1995 statistics of 56 enterprises, 29 enterprises have the test line; 27 enterprises do not have the test line, done in collaboration can only be entrusted to other units, this also led to individual enterprises is not lOO factory inspection of the vehicle. 5.5 periodic self-assessment of the reliability of state enterprises,[link widoczny dla zalogowanych], the industry in addition should strengthen the supervision and assessment of enterprise efforts, the enterprises should carry out various forms of reliability, quality of activities, to promote the reliability of the work, carry out the reliability of training, particularly 1o · the training of business leaders, and vigorously promote the reliability engineering, so applied to the product quality improvement and development process. Results station itself, according to volume month, quarter, conducted its own assessment. exists for the product and more prominent with the common quality problems, organize research, business leaders to the main pro persevere. Now, the reliability of medium-sized enterprises to regularly carry out assessment, small enterprises, collective enterprises do not regularly carry out the basic reliability check. enterprises can also be used to compare products to foreign assessment, reducing the reliability of advanced products with the international gap. (This editorial Liu Jin) (original closing date of Ba ,1996-08 · IB) Automotive Research and Development