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Dual-winch hydraulic control system and engineering machine

A hydraulic control system and double hoisting technology, which is applied in hoisting devices, mechanical equipment, spring mechanisms, etc., can solve the problems of poor control flexibility and many repetitive components, so as to reduce economic costs, reduce quantities, and improve control The effect of flexibility

Active Publication Date: 2014-04-16
SANY AUTOMOBILE HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a double-hoist hydraulic control system and construction machinery to solve the problem of the poor control flexibility of the existing double-hoist hydraulic control system and the duplication caused by the independent control modes of the main and auxiliary hoists. The problem with many components

Method used

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  • Dual-winch hydraulic control system and engineering machine
  • Dual-winch hydraulic control system and engineering machine
  • Dual-winch hydraulic control system and engineering machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Please refer to figure 1 , as shown in the figure, the double hoist hydraulic control system of this embodiment includes the main hoist motor brake 111, the main hoist motor 112, the first balance valve 113, the shuttle valve 114, the first oil circuit 115, the second oil circuit 116. Auxiliary hoist motor brake 121, auxiliary hoist motor 122, second balance valve 123, shuttle valve 124, oil drain passage 131, first directional control valve 141, control oil passage 142, reversing control main valve 151 and pilot Handle valve 161.

[0044] The main hoist motor brake 111 and the auxiliary hoist motor brake 121 are normally closed brakes. For the specific layout structure between the hoist motor brake and the hoist motor, please refer to the description of the relevant prior art, which will not be repeated here; The motor 112 has a first oil port a1 and a second oil port a2, the auxiliary winch motor has a first oil port b1 and a second oil port b2; the first balance val...

Embodiment 2

[0051] Please refer to figure 2 , the double hoist hydraulic control system in this embodiment includes the main hoist motor brake 111, the main hoist motor 112, the first balance valve 113, the shuttle valve 114, the first oil circuit 115, the second oil circuit 116, the auxiliary hoist Motor brake 121, auxiliary winch motor 122, oil drain passage 131, first directional control valve 141, control oil circuit 142, reversing control main valve 151 and pilot handle valve 161, details of these components (including oil port marking etc.) can refer to the description of Embodiment 1, and will not be repeated here. The main difference between Embodiment 2 and Embodiment 1 is that the main hoist motor 112 and the auxiliary hoist motor 122 share the same balancing valve (the first balancing valve 113), that is, the second oil port c2 of the first balancing valve 113 is connected to the main winding motor 113. The first oil port a1 of the hoist motor 112 communicates with the first ...

Embodiment 3

[0056] Please refer to image 3 , Figure 4 and Figure 5, the double hoist hydraulic control system of this embodiment includes the main hoist motor brake 111, the main hoist motor 112, the first balance valve 113, the shuttle valve 114, the first oil circuit 115, the second Oil circuit 116, auxiliary hoist motor brake 121, auxiliary hoist motor 122, oil drain passage 131, first direction control valve 141, control oil circuit 142, reversing control main valve 151 and pilot handle valve 161 (these components For details, please refer to the description of Embodiment 1 or Embodiment 2, which will not be repeated here), and also includes the first oil circuit switching control valve 171; in addition, in Embodiment 3, the first direction control valve 141 is integrated in the first oil circuit In the circuit switching control valve 171.

[0057] The first oil circuit switching control valve 171 also includes a first cartridge valve e1, a second cartridge valve e2, a third car...

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Abstract

The invention relates to the technical field of engineering machines and discloses a dual-winch hydraulic control system and an engineering machine. The dual-winch hydraulic control system comprises a main winch motor, a main winch motor brake, an auxiliary winch motor, an auxiliary winch motor brake, a first direction control valve, a first oil way, a second oil way, a control oil way and an oil drainage passage. The dual-winch hydraulic control system provided by the embodiment of the invention can realize the turning-on and the turning-off of the main winch motor brake and the auxiliary winch motor brake by controlling the first direction control valve, so as to realize the separate action of the main winch motor and the auxiliary winch motor. Compared with the prior art, an operation pilot handle is not required to be frequently changed and the complexity of an operating mechanism is reduced; and since the separate action of the main winch motor brake and the auxiliary winch motor brake or the main winch motor and the auxiliary winch motor is controlled by the first direction control valve, the main winch motor and the auxiliary winch motor can use the same oil way as an oil supply passage or an oil return passage, the number of repetitive components is reduced and the economic cost is decreased.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a double-winch hydraulic control system and construction machinery. Background technique [0002] There are many applications of double hoist systems on construction machinery. In an existing double hoist system, the control systems of the main hoist and the auxiliary hoist are independent of each other, and each uses a multi-way valve, a separate auxiliary valve and an operating system. Institutions are controlled separately. This control method requires frequent replacement of pilot handles with different operations, poor control flexibility, more repetitive components required, low utilization, and poor economy. [0003] Therefore, how to improve the existing double hoist hydraulic control system to further meet the needs of use is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] In view of this, the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/44F15B11/16
Inventor 刘丹陆晓兵李林
Owner SANY AUTOMOBILE HOISTING MACHINERY