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Hydraulic system of three-way piling car

A technology of hydraulic system and stacker truck, applied in the field of hydraulic system of three-way stacker truck, can solve the problems such as side shift and rotation of fork head, damage of precision equipment, inability to buffer fork head impact, etc., to prevent side shift and rotation , the effect of increasing accuracy, increasing accuracy

Inactive Publication Date: 2020-04-17
BANYITONG SCI & TECH DEVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still relatively obvious defects in its use: 1. The above-mentioned device does not have the function of two-way overflow, and cannot buffer the impact generated by the lateral movement or rotation of the fork head during braking, which is easy to cause damage to the precision equipment itself , or cause shaking and collision damage to fragile goods; 2. The above-mentioned device cannot realize the locking function through the relevant structure, so that the fork head in the free state is prone to lateral movement and rotation, which affects the accuracy, stability and safety of the forklift when stacking sex

Method used

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  • Hydraulic system of three-way piling car
  • Hydraulic system of three-way piling car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Two-way overflow: the overflow valve I6-2-1 in the side-shift hydraulic motor valve group 601 and the rotary hydraulic motor valve group 602 is connected in parallel with the overflow valve II6-2-2 and the direction is opposite, forming a "two-way overflow Flow valve", when the load of the fork head is too large or the limit is braked, the hydraulic motor 6-1 will stop rotating due to external force, which will increase the pressure of the hydraulic system. When the pressure reaches a predetermined value, one of the relief valves in the "two-way relief valve", that is, the relief valve Ⅰ6-2-1 or the relief valve Ⅱ6-2-2, will open to form a hydraulic circuit, and the hydraulic oil will not flow. After passing through the hydraulic motor 6-1, it directly passes through the pressure reducing valve II 6-2-5 or the pressure reducing valve I 6-2-6, flows out of the valve group 601 of the side-shift hydraulic motor or the valve group 602 of the rotary hydraulic mo...

Embodiment 2

[0030]Embodiment 2: Locking of the fork head: the oil inlet and outlet ports of the side-shift hydraulic motor valve group 601 and the rotary hydraulic motor valve group 602 are respectively provided with a pressure reducing valve I6-2-6 and a pressure reducing valve II6-2-5, The oil port of pressure reducing valve Ⅰ6-2-6 and pressure reducing valve Ⅱ6-2-5 is connected with multi-way valve 5, and the oil inlet and outlet of pressure reducing valve Ⅰ6-2-6 and pressure reducing valve Ⅱ6-2-5 In the opposite direction, a one-way valve I6-2-3 is installed in parallel on the pressure reducing valve I6-2-6, and the direction of the oil inlet and outlet of the two is opposite. Directional valve II 6-2-4, the oil inlet and outlet directions of the two are also opposite. When it is in the neutral position, the function of the neutral position is Y-type. At this time, the inlet and outlet ports V1 and V2 of the side-shift hydraulic motor valve group 601 and the rotary hydraulic motor val...

Embodiment 3

[0031] Embodiment 3: Mast lifting: At this time, the spool of the lifting reversing valve 5-3 is in the right position, and the hydraulic oil passes through the left oil circuit II 5-5, the one-way valve III 5-2, and the lifting reversing valve 5-3 It flows to the B1 port of the multi-way valve 5, and is introduced into the left oil circuit of the speed limiting valve 7, flows out of the speed limiting valve 7 through the check valve 7-1, and then enters the lifting cylinder 9 through the cut-off valve 8 to complete the lifting action.

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Abstract

The invention discloses a hydraulic system of a three-way piling car. The hydraulic system comprises an oil tank. A gear pump guides hydraulic oil into an oil inlet P of a multi-way valve through theoil outlet end. The multi-way valve comprises a lifting reversing valve, a lateral movement reversing valve and a rotating reversing valve. An oil port B1 of the lifting reversing valve is connected with a lifting oil cylinder. Oil ports A2 and B2 of the lateral movement reversing valve are connected with oil ports V2 and V1 of a lateral movement hydraulic motor valve set correspondingly. Oil ports A3 and B3 of the rotating reversing valve are connected with oil ports V2 and V1 of a rotating hydraulic motor valve set correspondingly. The meso-position functions of the lateral movement reversing valve and the rotating reversing valve are the type Y. According to the hydraulic system of the three-way piling car, the functions of lifting, lateral movement and rotating of the three-way pilingcar can be achieved, meanwhile, the hydraulic motor valve set has the structure which can achieve two-way overflowing and locks fork heads in a free state, precision, stability and safety during forklift piling are effectively increased, and the hydraulic system is quite worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a hydraulic system of a three-way stacker. Background technique [0002] The modern logistics industry has diversified development. With the increase of land and labor costs, there are more and more intensive shelves, and the matching three-way stacker trucks for narrow aisles have emerged as the times require. However, the existing three-way The stacking truck can only realize the lifting and lowering of the mast of the forklift truck, and has a single function, which cannot meet the needs of use. [0003] In the prior art, a hydraulic drive system for forklifts with the application number "201810991786.6" includes a braking device, a lifting cylinder, a tilting cylinder and a steering cylinder, as well as a brake device, a lifting cylinder, a tilting cylinder and a steering cylinder. The oil cylinder provides a gear pump and a hydraulic oil tank for high-pressure oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F9/22F15B11/16F15B13/06F15B21/041
CPCB66F9/22F15B11/16F15B13/06F15B21/041F15B2211/71
Inventor 李林
Owner BANYITONG SCI & TECH DEVING