Control system and control method with drill pipe inverted mast for rotary drilling rig
A technology of control system and rotary drilling rig, which is applied to the automatic control system of drilling, drilling equipment and methods, earthwork drilling and production, etc. It can solve problems such as rollover, rapid dumping of the mast, and shortening of the mast cylinder.
Active Publication Date: 2020-07-14
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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Problems solved by technology
However, when the mast is tilted backward and the mast reaches a certain angle, the moment arm of the mast cylinder is shortened sharply, resulting in insufficient thrust of the mast cylinder, which may cause the mast to quickly fall backwards and cause a vicious accident of overturning
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[0027] In order to describe the technical content, structural features, and achieved effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.
[0028] Such as Figure 1~4 As shown, the present invention provides a control system 1 and method with a drill pipe upside-down mast, which is suitable for a rotary drilling rig whose mast can be tilted backwards to a horizontal state, such as the rotary drilling rig introduced by the patent No. ZL, such as Figure 5 As shown, of course, other rotary drilling machines whose masts can be tilted backward to a horizontal state are also applicable to this embodiment.
[0029] see Figure 5 , the following briefly introduces the main structure of the rotary drilling rig, especially the main components involved in the introduction of the control system 1 with the drill pipe inverted mast later. The rotary drilling rig includes a turntable 1', a boom...
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The invention discloses a control system for a collapsible mast with a drill rod, and the system is applicable to a rotary drilling rig. The system comprises a control valve, a detection device and acontroller; the detection device is used for detecting the states of the rotary drilling rig, the states include the weight of a shaft pin of the drill rod and the inclination angle of the mast; the controller is used for receiving the states and controlling the control valve to move according to the states, and therefore the collapsible mast with the drill rod can be achieved. The invention further provides a control method for the collapsible mast with the drill rod. According to the control system and method for the collapsible mast with the drill rod, the states, such as the weight of theshaft pin of the drill rod and the inclination angle of the mast of the rotary drilling rig are detected constantly, stretchable motions of a mast lifting cylinder and a mast cylinder are controlled according to the states, logic control operations can be performed under the safe and reliable premise, and therefore the mast can be reversed backwards to the horizontal state, and no overturning accident is caused.
Description
technical field [0001] The invention relates to the technical field of construction machinery control, in particular to a control system and a control method suitable for a rotary drilling rig with a drill pipe inverted mast. Background technique [0002] The luffing mechanism of the rotary drilling rig is mainly divided into two types according to the structural form: the parallelogram form and the large triangle form. At present, small and medium-sized rotary drilling rigs generally adopt a parallelogram luffing mechanism, while large-scale rotary drilling rigs generally use a large triangular front lying luffing mechanism. [0003] The rotary drilling rig with parallelogram luffing mechanism can realize the backward folding of the mast through the deformation of its own structure, which greatly reduces the center of gravity and facilitates short-distance transfer. It does not need to disassemble too many parts during transportation, which is convenient for transportation....
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IPC IPC(8): E21B7/02E21B44/02
CPCE21B7/021E21B7/022E21B7/023E21B44/02
Inventor 车霞常延沛黄建林
Owner SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO