A kind of push-pull mechanism reinforcement control system of horizontal directional drilling machine
Technical field
The present invention relates to horizontal directional drilling machine manufacturing field, the push-pull mechanism reinforcement of more particularly to a kind of horizontal directional drilling machine
Control system.
Background technology
Horizontal directional drilling machine is a kind of engineering machine that a variety of subsurface utilities are laid under conditions of not excavating earth surface face
Tool, it is widely used in the laying of the underground piping in the fields such as water supply, electric power, communication, natural gas, oil, pipeline, it is suitable for
The various bad grounds such as sandy soil, clay, cobble, rock.
The push-pull mechanism of horizontal directional drilling machine must provide sufficiently large push-pull effort, can ensure construction it is smooth into
Row, the push-pull mechanism of horizontal directional drilling machine generally provide push-pull effort by hydraulic motor.Fig. 1 is referred to, it illustrates the prior arts
In horizontal directional drilling machine push-pull mechanism control system, including fuel tank 101, hydraulic pump 102, manual multiple-way valve 103, the first liquid
Pressure motor 104, the second hydraulic motor 105.
The push-pull mechanism control system operation principle of above-mentioned horizontal directional drilling machine is as follows:Hydraulic pump 102 is inhaled from fuel tank 101
Oil, manually multi-way valve 103 is to the first hydraulic motor 104,105 fuel feeding of the second hydraulic motor, so as to drive the first hydraulic pressure horse
It does work up to the 104, second hydraulic motor 105.It, can be by adjusting manual multiple-way valve 103 when drilling machine needs larger push-pull effort
On overflow valve pressure, the overflow valve pressure on manual multiple-way valve 103 is tuned up, to realize the larger push-pull effort of push-pull mechanism.
Usually in the case where ensureing the work efficiency of horizontal directional drilling machine, the relief valve set pressure on manual multiple-way valve 103 is 18MPa.
But it returns and drags or the operating modes such as rock are, it is necessary to which push-pull mechanism output bigger is pushed away in extra long distance drilling, large aperture
Pulling force.If push-pull effort is inadequate, it is easy to drilling rod, drilling tool be caused to be stuck, and the equipment for exchanging more large slide force is needed
Construction, causes huge economic loss.In order to export the push-pull effort of bigger, and the overflow valve pressure on manual multiple-way valve 103
Maximum is transferred to, since the engine power of driving hydraulic pump 102 is limited, push-pull effort improves, but the rotation of horizontal directional drilling machine
Rotation mechanism, slush pump mechanism efficiency will accordingly be lower, so as to influence working effect.
In summary, it is necessary to design a kind of new horizontal directional drilling machine push-pull mechanism reinforcement control system, Ji Nengti
The maximum push-pull effort that horizontal directional drilling machine can be output is risen, and can guarantee the work efficiency of horizontal directional drilling machine.
The content of the invention
The purpose of the present invention is in view of the above-mentioned drawbacks of the prior art, providing a kind of push-and-pull machine of horizontal directional drilling machine
Structure reinforcement control system, it is simple in structure, at low cost, reinforcement effect is apparent, it can ensure the construction effect of horizontal directional drilling machine simultaneously
Rate, and greatly improve the adaptability of horizontal directional drilling machine reply bad ground and special operation condition.
The present invention to achieve the above object the technical solution adopted is that:A kind of push-pull mechanism reinforcement control of horizontal directional drilling machine
System processed, including fuel tank, hydraulic pump, manual multiple-way valve, the first hydraulic motor, the second hydraulic motor, the oil outlet of hydraulic pump leads to
Oil pipe I is crossed to be connected with an oil inlet of manual multiple-way valve, an oil outlet of manual multiple-way valve again by oil pipe II respectively with
The oil inlet of first hydraulic motor and the second hydraulic motor connects, and the oil outlet of the first hydraulic motor and the second hydraulic motor passes through
Oil pipe III is connected with another oil inlet of manual multiple-way valve, another oil outlet of manual multiple-way valve passes through oil pipe IV and fuel tank
Connection, further includes manual overflow valve and normal open two-position three way magnetic valve, the oil inlet of manual overflow valve passes through oil pipe V and normal open
The oil outlet connection of two-position three way magnetic valve, the oil outlet of manual overflow valve are connected by oil pipe VI with fuel tank, normal open two three
The oil inlet of three-way electromagnetic valve is connected by the oil pipe I between oil pipe VII and hydraulic pump and manual multiple-way valve, normal open two-position three way electricity
Another oil outlet of magnet valve is connected by oil pipe VIII with fuel tank.
The present invention further technical solution be:The pressure value of the overflow valve of the manual multiple-way valve is 25MPa.
The present invention further technical solution be:The pressure value of the manual overflow valve is 18MPa.
The technique effect of the present invention:The present invention is compared with the push-pull mechanism control system of horizontal directional drilling machine in the prior art
Compared with raising hydraulic pump and the first hydraulic motor, the pressure rating of the second hydraulic motor add one often in hydraulic circuit
Logical two-position three way magnetic valve and a manual overflow valve need to increase a control valve, two parallel connections compared to other reinforcement modes
Motor is simpler, need not change too many component, and simple in structure at low cost, reinforcement effect is apparent, and the fan-out capability of push-pull effort obtains
To being obviously improved, while ensure the construction efficiency of horizontal directional drilling machine, and it is complicated greatly to improve horizontal directional drilling machine reply
Stratum and the adaptability of special operation condition.
The push-pull mechanism reinforcement control system of horizontal directional drilling machine of the present invention is made into one with reference to the accompanying drawings and examples
The explanation of step.
Description of the drawings
Fig. 1 is the hydraulic schematic diagram of the push-pull mechanism control system of state of the art directional drilling machine;
Fig. 2 is the hydraulic schematic diagram of the push-pull mechanism reinforcement control system of horizontal directional drilling machine of the present invention;
Drawing reference numeral explanation:101- fuel tanks, 102- hydraulic pumps, 103- manual multiple-way valves, the first hydraulic motors of 104-, 105- second
Hydraulic motor, the manual overflow valves of 106-, 107- normal open two-position three way magnetic valves, 1- oil pipes I, 2- oil pipes II, 3- oil pipes III, 4- oil
Pipe IV, 5- oil pipes V, 6- oil pipes VI, 7- oil pipes VII, 8- oil pipes VIII.
Specific embodiment
As shown in Fig. 2, the push-pull mechanism reinforcement control system of horizontal directional drilling machine of the present invention, including fuel tank 101, hydraulic pump
102nd, manual multiple-way valve 103, the first hydraulic motor 104, the second hydraulic motor 105, oil inlet and the fuel tank 101 of hydraulic pump 102
Connection, the oil outlet of hydraulic pump 102 are connected by oil pipe I 1 with an oil inlet of manual multiple-way valve 103, manual multiple-way valve 103
An oil outlet be connected again by oil inlet of the oil pipe II 2 respectively with the first hydraulic motor 104 and the second hydraulic motor 105,
The oil outlet of first hydraulic motor 104 and the second hydraulic motor 105 by oil pipe III 3 and manual multiple-way valve 103 another into
Hydraulic fluid port connects, another oil outlet of manual multiple-way valve 103 is connected by oil pipe IV 4 with fuel tank 101, wherein manual multiple-way valve
The pressure value of 103 overflow valve is 25MPa.The push-pull mechanism reinforcement control system of horizontal directional drilling machine of the present invention further includes manually
Overflow valve 106 and normal open two-position three way magnetic valve 107, wherein the pressure value of manual overflow valve 106 is 18MPa, manual overflow valve
106 oil inlet is connected by oil pipe V 5 with the oil outlet of normal open two-position three way magnetic valve 107, manual overflow valve 106 it is fuel-displaced
Mouth is connected by oil pipe VI 6 with fuel tank 101, and the oil inlet of normal open two-position three way magnetic valve 107 passes through oil pipe VII 7 and hydraulic pump
Oil pipe I 1 between 102 and manual multiple-way valve 103 connects, another oil outlet of normal open two-position three way magnetic valve 107 passes through oil
Pipe VIII 8 is connected with fuel tank 101.
The operation principle of the push-pull mechanism reinforcement control system of horizontal directional drilling machine of the present invention is as follows:Hydraulic pump 102 is from oil
101 oil suction of case, manually multi-way valve 103 is to the first hydraulic motor 104,105 fuel feeding of the second hydraulic motor, so as to drive first
Hydraulic motor 104, the second hydraulic motor 105 do work, the overflow valve pressure on manual multiple-way valve 103 set when dispatching from the factory pressure as
25MPa, in the case where ensureing the work efficiency of horizontal directional drilling machine, by normal open two-position three way magnetic valve 107 to manual overflow valve 106
Pressure is set as 18MPa.Push-pull effort size of the horizontal directional drilling machine in general work progress by manual overflow valve 106 pressure
Size determines.It returns and drags or the operating modes such as rock are, it is necessary to the push-pull effort of push-pull mechanism output bigger in extra long distance drilling, large aperture
When, by electricity normal open two-position three way magnetic valve 107 being allowed to open, disconnected by 107 oil circuit of normal open two-position three way magnetic valve, it is horizontal
The push-pull effort size of directional drilling machine is then determined by the overflow valve pressure size on manual multiple-way valve 103.Pressure moment is from 18 MPa
It is promoted to 25 MPa, pressure 7 MPa of increase, amplification about 38.9%, the first hydraulic motor 104, the second hydraulic motor 105 do work defeated
Going out push-pull effort accordingly increases about 38.9%, and so as to fulfill reinforcement, and reinforcement effect is apparent.
Above example is only presently preferred embodiments of the present invention, and structure of the invention is not limited to what above-described embodiment was enumerated
Form, any modification made within the spirit and principles of the invention, equivalent substitution etc. should be included in the guarantor of the present invention
Within the scope of shield.